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<span>Methods</span> </div> </a> <button aria-controls="toc-Methods-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Toggle Methods subsection</span> </button> <ul id="toc-Methods-sublist" class="vector-toc-list"> <li id="toc-Traditional" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Traditional"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.1</span> <span>Traditional</span> </div> </a> <ul id="toc-Traditional-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Modern" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Modern"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.2</span> <span>Modern</span> </div> </a> <ul id="toc-Modern-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Chemistry_behind_the_transformation" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Chemistry_behind_the_transformation"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.3</span> <span>Chemistry behind the transformation</span> </div> </a> <ul id="toc-Chemistry_behind_the_transformation-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Uses" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Uses"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Uses</span> </div> </a> <ul id="toc-Uses-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Nutritional_facts" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Nutritional_facts"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Nutritional facts</span> </div> </a> <ul id="toc-Nutritional_facts-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Misconception_and_etymology" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Misconception_and_etymology"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Misconception and etymology</span> </div> </a> <ul id="toc-Misconception_and_etymology-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Safety" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Safety"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>Safety</span> </div> </a> <ul id="toc-Safety-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Gallery" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Gallery"> <div class="vector-toc-text"> <span class="vector-toc-numb">7</span> <span>Gallery</span> </div> </a> <ul id="toc-Gallery-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-See_also" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#See_also"> <div class="vector-toc-text"> <span class="vector-toc-numb">8</span> <span>See also</span> </div> </a> <ul id="toc-See_also-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-References" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#References"> <div class="vector-toc-text"> <span class="vector-toc-numb">9</span> <span>References</span> </div> </a> <button aria-controls="toc-References-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Toggle References subsection</span> </button> <ul id="toc-References-sublist" class="vector-toc-list"> <li id="toc-Citations" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Citations"> <div class="vector-toc-text"> <span class="vector-toc-numb">9.1</span> <span>Citations</span> </div> </a> <ul id="toc-Citations-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Sources" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Sources"> <div class="vector-toc-text"> <span class="vector-toc-numb">9.2</span> <span>Sources</span> </div> </a> <ul id="toc-Sources-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-External_links" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#External_links"> <div class="vector-toc-text"> <span class="vector-toc-numb">10</span> <span>External links</span> </div> </a> <ul id="toc-External_links-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Contents" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Toggle the table of contents" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Toggle the table of contents</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Century egg</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Go to an article in another language. Available in 44 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-44" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">44 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%A8%D9%8A%D8%B6_%D8%A7%D9%84%D9%82%D8%B1%D9%86" title="بيض القرن – Arabic" lang="ar" hreflang="ar" data-title="بيض القرن" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%B6%E0%A6%A4%E0%A6%AC%E0%A6%B0%E0%A7%8D%E0%A6%B7%E0%A7%80_%E0%A6%A1%E0%A6%BF%E0%A6%AE" title="শতবর্ষী ডিম – Bangla" lang="bn" hreflang="bn" data-title="শতবর্ষী ডিম" data-language-autonym="বাংলা" data-language-local-name="Bangla" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-zh-min-nan mw-list-item"><a href="https://zh-min-nan.wikipedia.org/wiki/Ph%C3%AE-t%C3%A0n" title="Phî-tàn – Minnan" lang="nan" hreflang="nan" data-title="Phî-tàn" data-language-autonym="閩南語 / Bân-lâm-gú" data-language-local-name="Minnan" class="interlanguage-link-target"><span>閩南語 / Bân-lâm-gú</span></a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/%D0%A1%D1%82%D0%B0%D0%B3%D0%B0%D0%B4%D0%BE%D0%B2%D0%B0%D0%B5_%D1%8F%D0%B9%D0%BA%D0%B0" title="Стагадовае яйка – Belarusian" lang="be" hreflang="be" data-title="Стагадовае яйка" data-language-autonym="Беларуская" data-language-local-name="Belarusian" class="interlanguage-link-target"><span>Беларуская</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%92%D0%B5%D0%BA%D0%BE%D0%B2%D0%BD%D0%BE_%D1%8F%D0%B9%D1%86%D0%B5" title="Вековно яйце – Bulgarian" lang="bg" hreflang="bg" data-title="Вековно яйце" data-language-autonym="Български" data-language-local-name="Bulgarian" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Ou_centenari" title="Ou centenari – Catalan" lang="ca" hreflang="ca" data-title="Ou centenari" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Stolet%C3%A9_vejce" title="Stoleté vejce – Czech" lang="cs" hreflang="cs" data-title="Stoleté vejce" data-language-autonym="Čeština" data-language-local-name="Czech" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Tusind%C3%A5rs%C3%A6g" title="Tusindårsæg – Danish" lang="da" hreflang="da" data-title="Tusindårsæg" data-language-autonym="Dansk" data-language-local-name="Danish" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Tausendj%C3%A4hrige_Eier" title="Tausendjährige Eier – German" lang="de" hreflang="de" data-title="Tausendjährige Eier" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Huevo_centenario" title="Huevo centenario – Spanish" lang="es" hreflang="es" data-title="Huevo centenario" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%AA%D8%AE%D9%85%E2%80%8C%D9%85%D8%B1%D8%BA_%D8%B5%D8%AF%D8%B3%D8%A7%D9%84%D9%87" title="تخم‌مرغ صدساله – Persian" lang="fa" hreflang="fa" data-title="تخم‌مرغ صدساله" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/%C5%92uf_de_cent_ans" title="Œuf de cent ans – French" lang="fr" hreflang="fr" data-title="Œuf de cent ans" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%ED%94%BC%EB%8B%A8" title="피단 – Korean" lang="ko" hreflang="ko" data-title="피단" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-ha mw-list-item"><a href="https://ha.wikipedia.org/wiki/Century_eggs" title="Century eggs – Hausa" lang="ha" hreflang="ha" data-title="Century eggs" data-language-autonym="Hausa" data-language-local-name="Hausa" class="interlanguage-link-target"><span>Hausa</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D5%80%D5%A1%D6%80%D5%B5%D5%B8%D6%82%D6%80%D5%A1%D5%B4%D5%B5%D5%A1_%D5%B1%D5%B8%D6%82" title="Հարյուրամյա ձու – Armenian" lang="hy" hreflang="hy" data-title="Հարյուրամյա ձու" data-language-autonym="Հայերեն" data-language-local-name="Armenian" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Telur_bitan" title="Telur bitan – Indonesian" lang="id" hreflang="id" data-title="Telur bitan" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indonesian" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Uovo_centenario" title="Uovo centenario – Italian" lang="it" hreflang="it" data-title="Uovo centenario" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%91%D7%99%D7%A6%D7%AA_%D7%9E%D7%90%D7%94_%D7%94%D7%A9%D7%A0%D7%99%D7%9D" title="ביצת מאה השנים – Hebrew" lang="he" hreflang="he" data-title="ביצת מאה השנים" data-language-autonym="עברית" data-language-local-name="Hebrew" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-jv mw-list-item"><a href="https://jv.wikipedia.org/wiki/Endhog_abad" title="Endhog abad – Javanese" lang="jv" hreflang="jv" data-title="Endhog abad" data-language-autonym="Jawa" data-language-local-name="Javanese" class="interlanguage-link-target"><span>Jawa</span></a></li><li class="interlanguage-link interwiki-lb mw-list-item"><a href="https://lb.wikipedia.org/wiki/Dausendj%C3%A4regt_Ee" title="Dausendjäregt Ee – Luxembourgish" lang="lb" hreflang="lb" data-title="Dausendjäregt Ee" data-language-autonym="Lëtzebuergesch" data-language-local-name="Luxembourgish" class="interlanguage-link-target"><span>Lëtzebuergesch</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/Am%C5%BEiaus_kiau%C5%A1inis" title="Amžiaus kiaušinis – Lithuanian" lang="lt" hreflang="lt" data-title="Amžiaus kiaušinis" data-language-autonym="Lietuvių" data-language-local-name="Lithuanian" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Sz%C3%A1znapos_toj%C3%A1s" title="Száznapos tojás – Hungarian" lang="hu" hreflang="hu" data-title="Száznapos tojás" data-language-autonym="Magyar" data-language-local-name="Hungarian" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%B8%E0%B5%86%E0%B4%9E%E0%B5%8D%E0%B4%9A%E0%B5%81%E0%B4%B1%E0%B4%BF_%E0%B4%8E%E0%B4%97%E0%B5%8D" title="സെഞ്ചുറി എഗ് – Malayalam" lang="ml" hreflang="ml" data-title="സെഞ്ചുറി എഗ്" data-language-autonym="മലയാളം" data-language-local-name="Malayalam" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-arz mw-list-item"><a href="https://arz.wikipedia.org/wiki/%D8%A8%D9%8A%D8%B6_%D8%A7%D9%84%D9%82%D8%B1%D9%86" title="بيض القرن – Egyptian Arabic" lang="arz" hreflang="arz" data-title="بيض القرن" data-language-autonym="مصرى" data-language-local-name="Egyptian Arabic" class="interlanguage-link-target"><span>مصرى</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Telur_padi" title="Telur padi – Malay" lang="ms" hreflang="ms" data-title="Telur padi" data-language-autonym="Bahasa Melayu" data-language-local-name="Malay" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Duizendjarig_ei" title="Duizendjarig ei – Dutch" lang="nl" hreflang="nl" data-title="Duizendjarig ei" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E7%9A%AE%E8%9B%8B" title="皮蛋 – Japanese" lang="ja" hreflang="ja" data-title="皮蛋" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Tusen%C3%A5rsegg" title="Tusenårsegg – Norwegian Bokmål" lang="nb" hreflang="nb" data-title="Tusenårsegg" data-language-autonym="Norsk bokmål" data-language-local-name="Norwegian Bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Stuletnie_jaja" title="Stuletnie jaja – Polish" lang="pl" hreflang="pl" data-title="Stuletnie jaja" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Ovo_centen%C3%A1rio" title="Ovo centenário – Portuguese" lang="pt" hreflang="pt" data-title="Ovo centenário" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Ou_centenar" title="Ou centenar – Romanian" lang="ro" hreflang="ro" data-title="Ou centenar" data-language-autonym="Română" data-language-local-name="Romanian" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%A1%D1%82%D0%BE%D0%BB%D0%B5%D1%82%D0%BD%D0%B5%D0%B5_%D1%8F%D0%B9%D1%86%D0%BE" title="Столетнее яйцо – Russian" lang="ru" hreflang="ru" data-title="Столетнее яйцо" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Century_egg" title="Century egg – Simple English" lang="en-simple" hreflang="en-simple" data-title="Century egg" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Tuhatvuotinen_muna" title="Tuhatvuotinen muna – Finnish" lang="fi" hreflang="fi" data-title="Tuhatvuotinen muna" data-language-autonym="Suomi" data-language-local-name="Finnish" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Tusen%C3%A5riga_%C3%A4gg" title="Tusenåriga ägg – Swedish" lang="sv" hreflang="sv" data-title="Tusenåriga ägg" data-language-autonym="Svenska" data-language-local-name="Swedish" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/%E0%AE%A8%E0%AF%82%E0%AE%B1%E0%AF%8D%E0%AE%B1%E0%AE%BE%E0%AE%A3%E0%AF%8D%E0%AE%9F%E0%AF%81_%E0%AE%AE%E0%AF%81%E0%AE%9F%E0%AF%8D%E0%AE%9F%E0%AF%88" title="நூற்றாண்டு முட்டை – Tamil" lang="ta" hreflang="ta" data-title="நூற்றாண்டு முட்டை" data-language-autonym="தமிழ்" data-language-local-name="Tamil" class="interlanguage-link-target"><span>தமிழ்</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B9%84%E0%B8%82%E0%B9%88%E0%B9%80%E0%B8%A2%E0%B8%B5%E0%B9%88%E0%B8%A2%E0%B8%A7%E0%B8%A1%E0%B9%89%E0%B8%B2" title="ไข่เยี่ยวม้า – Thai" lang="th" hreflang="th" data-title="ไข่เยี่ยวม้า" data-language-autonym="ไทย" data-language-local-name="Thai" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Y%C3%BCzy%C4%B1l_yumurtas%C4%B1" title="Yüzyıl yumurtası – Turkish" lang="tr" hreflang="tr" 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class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">From Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Chinese egg-based culinary dish</div> <style data-mw-deduplicate="TemplateStyles:r1257001546">.mw-parser-output .infobox-subbox{padding:0;border:none;margin:-3px;width:auto;min-width:100%;font-size:100%;clear:none;float:none;background-color:transparent}.mw-parser-output .infobox-3cols-child{margin:auto}.mw-parser-output .infobox .navbar{font-size:100%}@media screen{html.skin-theme-clientpref-night .mw-parser-output .infobox-full-data:not(.notheme)>div:not(.notheme)[style]{background:#1f1f23!important;color:#f8f9fa}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox-full-data:not(.notheme) div:not(.notheme){background:#1f1f23!important;color:#f8f9fa}}@media(min-width:640px){body.skin--responsive .mw-parser-output .infobox-table{display:table!important}body.skin--responsive .mw-parser-output .infobox-table>caption{display:table-caption!important}body.skin--responsive .mw-parser-output .infobox-table>tbody{display:table-row-group}body.skin--responsive .mw-parser-output .infobox-table tr{display:table-row!important}body.skin--responsive .mw-parser-output .infobox-table th,body.skin--responsive .mw-parser-output .infobox-table td{padding-left:inherit;padding-right:inherit}}</style><table class="infobox hrecipe adr"><caption class="infobox-title fn"><span>Century egg</span></caption><tbody><tr><td colspan="2" class="infobox-image"><span class="mw-default-size" typeof="mw:File/Frameless"><a href="/wiki/File:Century_egg_sliced_open.jpeg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/Century_egg_sliced_open.jpeg/220px-Century_egg_sliced_open.jpeg" decoding="async" width="220" height="220" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/Century_egg_sliced_open.jpeg/330px-Century_egg_sliced_open.jpeg 1.5x, //upload.wikimedia.org/wikipedia/commons/6/63/Century_egg_sliced_open.jpeg 2x" data-file-width="415" data-file-height="415" /></a></span><div class="infobox-caption" style="padding-bottom:0.25em;border-bottom:1px solid #aaa;">A century egg sliced open</div></td></tr><tr class="note"><th scope="row" class="infobox-label" style="line-height:1.15em; padding-right:0.65em;">Alternative names</th><td class="infobox-data">preserved egg, hundred-year egg, thousand-year egg, thousand-year-old egg, millennium egg, black egg, blacking egg, skin egg, old egg</td></tr><tr class="note"><th scope="row" class="infobox-label" style="line-height:1.15em; padding-right:0.65em;">Place of origin</th><td class="infobox-data country-name"><a href="/wiki/Hunan" title="Hunan">Hunan</a>, <a href="/wiki/China" title="China">China</a></td></tr><tr><th scope="row" class="infobox-label" style="line-height:1.15em; padding-right:0.65em;">Main ingredients</th><td class="infobox-data ingredient"><a href="/wiki/Egg_as_food" class="mw-redirect" title="Egg as food">Egg</a> preserved in <a href="/wiki/Clay" title="Clay">clay</a>, <a href="/wiki/Wood_ash" title="Wood ash">ash</a>, <a href="/wiki/Salt" title="Salt">salt</a>, <a href="/wiki/Calcium_oxide" title="Calcium oxide">quicklime</a>, and <a href="/wiki/Rice_hulls" class="mw-redirect" title="Rice hulls">rice hulls</a></td></tr><tr><th scope="row" class="infobox-label" style="line-height:1.15em; padding-right:0.65em;">Variations</th><td class="infobox-data"><a href="/wiki/Duck_egg" class="mw-redirect" title="Duck egg">duck</a>, <a href="/wiki/Chicken_egg" class="mw-redirect" title="Chicken egg">chicken</a>, or <a href="/wiki/Quail_egg" class="mw-redirect" title="Quail egg">quail</a> eggs</td></tr><tr><td colspan="2" class="infobox-below" style="border-top:1px solid #aaa;padding-top:0.25em;"><style data-mw-deduplicate="TemplateStyles:r1126788409">.mw-parser-output .plainlist ol,.mw-parser-output .plainlist ul{line-height:inherit;list-style:none;margin:0;padding:0}.mw-parser-output .plainlist ol li,.mw-parser-output .plainlist ul li{margin-bottom:0}</style><div class="plainlist"><ul><li> <span class="noviewer" typeof="mw:File"><a href="/wiki/File:Commons-logo.svg" class="mw-file-description"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/12px-Commons-logo.svg.png" decoding="async" width="12" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/18px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/24px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /></a></span> <a href="https://commons.wikimedia.org/wiki/Century_egg" class="extiw" title="commons:Century egg">Media: Century egg</a></li></ul></div></td></tr></tbody></table> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Century_eggs_(2).jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/86/Century_eggs_%282%29.jpg/220px-Century_eggs_%282%29.jpg" decoding="async" width="220" height="183" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/86/Century_eggs_%282%29.jpg/330px-Century_eggs_%282%29.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/86/Century_eggs_%282%29.jpg/440px-Century_eggs_%282%29.jpg 2x" data-file-width="3283" data-file-height="2736" /></a><figcaption>Century eggs made in Shangqiu, China</figcaption></figure><figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Century_eggs_(1).jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/0/01/Century_eggs_%281%29.jpg/220px-Century_eggs_%281%29.jpg" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/01/Century_eggs_%281%29.jpg/330px-Century_eggs_%281%29.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/01/Century_eggs_%281%29.jpg/440px-Century_eggs_%281%29.jpg 2x" data-file-width="3648" data-file-height="2736" /></a><figcaption>Century eggs made in Shangqiu, China</figcaption></figure> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1257001546"><table class="infobox"><tbody><tr><th colspan="2" class="infobox-above" style="color: #202122;background-color:#b0c4de">Century egg</th></tr><tr style="display:none;"><td colspan="2" class="infobox-full-data"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1257001546"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1257001546"></td></tr><tr><th colspan="2" class="infobox-header" style="color: #202122;background-color: #b0c4de;">Chinese name</th></tr><tr><th scope="row" class="infobox-label" style="font-weight:normal;"><a href="/wiki/Chinese_language" title="Chinese language">Chinese</a></th><td class="infobox-data"><span title="Chinese-language text"><span lang="zh-Hani" style="font-size: 1rem;"><a href="https://en.wiktionary.org/wiki/%E7%9A%AE%E8%9B%8B" class="extiw" title="wikt:皮蛋">皮蛋</a></span></span></td></tr><tr><th scope="row" class="infobox-label" style="font-weight:normal;">Literal meaning</th><td class="infobox-data">"leather/skin egg"</td></tr><tr><td colspan="2" class="infobox-full-data"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1257001546"><table class="infobox-subbox mw-collapsible mw-collapsed" style="display:inline-table; text-align: left;"><tbody><tr><th colspan="2" class="infobox-above" style="font-size: 100%; text-align: left;color: #202122; background-color: #f9ffbc;">Transcriptions</th></tr><tr><th colspan="2" class="infobox-header" style="color: #202122;background-color: #dcffc9;"><a href="/wiki/Standard_Chinese" title="Standard Chinese">Standard Mandarin</a></th></tr><tr><th scope="row" class="infobox-label" style="font-weight:normal;"><a href="/wiki/Hanyu_Pinyin" class="mw-redirect" title="Hanyu Pinyin">Hanyu Pinyin</a></th><td class="infobox-data"><span title="Chinese-language romanization"><span style="font-style: normal" lang="zh-Latn">pídàn</span></span></td></tr><tr><th scope="row" class="infobox-label" style="font-weight:normal;"><a href="/wiki/Help:IPA/Mandarin" title="Help:IPA/Mandarin">IPA</a></th><td class="infobox-data"><span title="Chinese-language romanization"><span style="font-style: normal" lang="zh-Latn"><span class="IPA" lang="cmn-Latn-fonipa" style="white-space:nowrap"><a href="/wiki/Help:IPA/Mandarin" title="Help:IPA/Mandarin">[pʰǐ.tân]</a></span></span></span></td></tr><tr><th colspan="2" class="infobox-header" style="color: #202122;background-color: #dcffc9;"><a href="/wiki/Cantonese" title="Cantonese">Yue: Cantonese</a></th></tr><tr><th scope="row" class="infobox-label" style="font-weight:normal;"><a href="/wiki/Yale_romanization_of_Cantonese" title="Yale romanization of Cantonese">Yale Romanization</a></th><td class="infobox-data"><span title="Yue Chinese-language romanization"><span style="font-style: normal" lang="yue-Latn">pèih dáan</span></span></td></tr><tr><th scope="row" class="infobox-label" style="font-weight:normal;"><a href="/wiki/Jyutping" title="Jyutping">Jyutping</a></th><td class="infobox-data"><span title="Yue Chinese-language romanization"><span style="font-style: normal" lang="yue-Latn">pei4 daan2</span></span></td></tr><tr><th colspan="2" class="infobox-header" style="color: #202122;background-color: #dcffc9;"><a href="/wiki/Southern_Min" title="Southern Min">Southern Min</a></th></tr><tr><th scope="row" class="infobox-label" style="font-weight:normal;"><a href="/wiki/Hokkien" title="Hokkien">Hokkien</a> <a href="/wiki/Pe%CC%8Dh-%C5%8De-j%C4%AB" title="Pe̍h-ōe-jī">POJ</a></th><td class="infobox-data"><span title="Min Nan Chinese-language romanization"><span style="font-style: normal" lang="nan-Latn">phî-tàn</span></span></td></tr></tbody></table></td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1257001546"></tr><tr><th colspan="2" class="infobox-header" style="color: #202122;background-color: #b0c4de;">Alternative Chinese name</th></tr><tr><th scope="row" class="infobox-label" style="font-weight:normal;"><a href="/wiki/Chinese_language" title="Chinese language">Chinese</a></th><td class="infobox-data"><span title="Chinese-language text"><span lang="zh-Hani" style="font-size: 1rem;"><a href="https://en.wiktionary.org/wiki/%E6%9D%BE%E8%8A%B1%E8%9B%8B" class="extiw" title="wikt:松花蛋">松花蛋</a></span></span></td></tr><tr><th scope="row" class="infobox-label" style="font-weight:normal;">Literal meaning</th><td class="infobox-data">pine-patterned egg</td></tr><tr><td colspan="2" class="infobox-full-data"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1257001546"><table class="infobox-subbox mw-collapsible mw-collapsed" style="display:inline-table; text-align: left;"><tbody><tr><th colspan="2" class="infobox-above" style="font-size: 100%; text-align: left;color: #202122; background-color: #f9ffbc;">Transcriptions</th></tr><tr><th colspan="2" class="infobox-header" style="color: #202122;background-color: #dcffc9;"><a href="/wiki/Standard_Chinese" title="Standard Chinese">Standard Mandarin</a></th></tr><tr><th scope="row" class="infobox-label" style="font-weight:normal;"><a href="/wiki/Hanyu_Pinyin" class="mw-redirect" title="Hanyu Pinyin">Hanyu Pinyin</a></th><td class="infobox-data"><span title="Chinese-language romanization"><span style="font-style: normal" lang="zh-Latn">sōnghuādàn</span></span></td></tr><tr><th colspan="2" class="infobox-header" style="color: #202122;background-color: #dcffc9;"><a href="/wiki/Cantonese" title="Cantonese">Yue: Cantonese</a></th></tr><tr><th scope="row" class="infobox-label" style="font-weight:normal;"><a href="/wiki/Yale_romanization_of_Cantonese" title="Yale romanization of Cantonese">Yale Romanization</a></th><td class="infobox-data"><span title="Yue Chinese-language romanization"><span style="font-style: normal" lang="yue-Latn">chùhng fā dáan</span></span></td></tr><tr><th scope="row" class="infobox-label" style="font-weight:normal;"><a href="/wiki/Jyutping" title="Jyutping">Jyutping</a></th><td class="infobox-data"><span title="Yue Chinese-language romanization"><span style="font-style: normal" lang="yue-Latn">cung4 faa1 daan2</span></span></td></tr><tr><th colspan="2" class="infobox-header" style="color: #202122;background-color: #dcffc9;"><a href="/wiki/Southern_Min" title="Southern Min">Southern Min</a></th></tr><tr><th scope="row" class="infobox-label" style="font-weight:normal;"><a href="/wiki/Hokkien" title="Hokkien">Hokkien</a> <a href="/wiki/Pe%CC%8Dh-%C5%8De-j%C4%AB" title="Pe̍h-ōe-jī">POJ</a></th><td class="infobox-data"><span title="Min Nan Chinese-language romanization"><span style="font-style: normal" lang="nan-Latn">chhái-tàn (彩蛋 "colorful egg")<br />hoe-nn̄g or he-nn̄g (灰卵 "grey egg")</span></span></td></tr></tbody></table></td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1257001546"></tr><tr><th colspan="2" class="infobox-header" style="color: #202122;background-color: #b0c4de;">Vietnamese name</th></tr><tr><th scope="row" class="infobox-label" style="font-weight:normal;"><a href="/wiki/Vietnamese_alphabet" title="Vietnamese alphabet">Vietnamese alphabet</a></th><td class="infobox-data"><span title="Vietnamese-language text"><i lang="vi">trứng vịt bắc thảo / trứng bách thảo</i></span></td></tr><tr><th scope="row" class="infobox-label" style="font-weight:normal;"><a href="/wiki/H%C3%A1n-N%C3%B4m" class="mw-redirect" title="Hán-Nôm">Hán-Nôm</a></th><td class="infobox-data"><span title="Vietnamese-language text"><span lang="vi-Hani">𠨡鴨北草 / 𠨡百草</span></span></td></tr><tr><th scope="row" class="infobox-label" style="font-weight:normal;">Literal meaning</th><td class="infobox-data">northern grass duck egg / hundred-herb egg</td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1257001546"></tr><tr><th colspan="2" class="infobox-header" style="color: #202122;background-color: #b0c4de;">Thai name</th></tr><tr><th scope="row" class="infobox-label" style="font-weight:normal;"><a href="/wiki/Thai_language" title="Thai language">Thai</a></th><td class="infobox-data"><span title="Thai-language text"><span lang="th"><span title="Thai-language text"><span lang="th">ไข่เยี่ยวม้า</span></span><br /><span class="IPA nowrap" lang="th-Latn-fonipa"><a href="/wiki/Help:IPA/Thai" title="Help:IPA/Thai">[kʰàj<span class="wrap"> </span>jîa̯w<span class="wrap"> </span>máː]</a></span></span></span></td></tr><tr><th scope="row" class="infobox-label" style="font-weight:normal;"><a href="/wiki/Royal_Thai_General_System_of_Transcription" title="Royal Thai General System of Transcription">RTGS</a></th><td class="infobox-data"><span title="Royal Thai General System of Transcription"><i lang="th-Latn">khai yiao ma</i></span></td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1257001546"></tr><tr><th colspan="2" class="infobox-header" style="color: #202122;background-color: #b0c4de;">Korean name</th></tr><tr><th scope="row" class="infobox-label" style="font-weight:normal;"><a href="/wiki/Hangul" title="Hangul">Hangul</a></th><td class="infobox-data"><span title="Korean-language text"><span lang="ko" style="font-size: 1rem;">피단</span></span></td></tr><tr><th scope="row" class="infobox-label" style="font-weight:normal;"><a href="/wiki/Hanja" title="Hanja">Hanja</a></th><td class="infobox-data"><span title="Korean-language text"><span lang="ko" style="font-size: 1rem;">皮蛋</span></span></td></tr><tr><td colspan="2" class="infobox-full-data"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1257001546"><table class="infobox-subbox mw-collapsible mw-collapsed" style="display:inline-table; text-align: left;"><tbody><tr><th colspan="2" class="infobox-above" style="font-size: 100%; text-align: left;color: #202122; background-color: #f9ffbc;">Transcriptions</th></tr><tr><th scope="row" class="infobox-label" style="font-weight:normal;"><a href="/wiki/Revised_Romanization_of_Korean" title="Revised Romanization of Korean">Revised Romanization</a></th><td class="infobox-data"><span title="Korean-language romanization"><span style="font-style: normal" lang="ko-Latn">pidan</span></span></td></tr><tr><th scope="row" class="infobox-label" style="font-weight:normal;"><a href="/wiki/McCune%E2%80%93Reischauer" title="McCune–Reischauer">McCune–Reischauer</a></th><td class="infobox-data"><span title="Korean-language romanization"><span style="font-style: normal" lang="ko-Latn">p'idan</span></span></td></tr></tbody></table></td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1257001546"></tr><tr><th colspan="2" class="infobox-header" style="color: #202122;background-color: #b0c4de;">Japanese name</th></tr><tr><th scope="row" class="infobox-label" style="font-weight:normal;"><a href="/wiki/Kanji" title="Kanji">Kanji</a></th><td class="infobox-data"><span title="Japanese-language text"><span lang="ja"><a href="https://en.wiktionary.org/wiki/%E7%9A%AE%E8%9B%8B" class="extiw" title="wikt:皮蛋">皮蛋</a></span></span></td></tr><tr><th scope="row" class="infobox-label" style="font-weight:normal;"><a href="/wiki/Kana" title="Kana">Kana</a></th><td class="infobox-data"><span title="Japanese-language text"><span lang="ja"><a href="https://en.wiktionary.org/wiki/%E3%83%94%E3%83%BC%E3%82%BF%E3%83%B3" class="extiw" title="wikt:ピータン">ピータン</a></span></span></td></tr><tr><td colspan="2" class="infobox-full-data"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1257001546"><table class="infobox-subbox mw-collapsible mw-collapsed" style="display:inline-table; text-align: left;"><tbody><tr><th colspan="2" class="infobox-above" style="font-size: 100%; text-align: left;color: #202122; background-color: #f9ffbc;">Transcriptions</th></tr><tr><th scope="row" class="infobox-label" style="font-weight:normal;"><a href="/wiki/Romanization_of_Japanese" title="Romanization of Japanese">Romanization</a></th><td class="infobox-data"><span title="Japanese-language romanization"><span style="font-style: normal" lang="ja-Latn">pītan</span></span></td></tr></tbody></table></td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1257001546"></tr><tr><th colspan="2" class="infobox-header" style="color: #202122;background-color: #b0c4de;">Khmer name</th></tr><tr><th scope="row" class="infobox-label" style="font-weight:normal;"><a href="/wiki/Khmer_language" title="Khmer language">Khmer</a></th><td class="infobox-data"><span title="Khmer-language text"><span lang="km">ស៊ុតបម្រុងទុក</span></span></td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1257001546"></tr><tr style="display:none"><td colspan="2"> </td></tr></tbody></table> <p><b>Century eggs</b> (<a href="/wiki/Simplified_Chinese_characters" title="Simplified Chinese characters">Chinese</a>: <span lang="zh-Hans"><a href="https://en.wiktionary.org/wiki/%E7%9A%AE%E8%9B%8B" class="extiw" title="wikt:皮蛋">皮蛋</a></span>; <a href="/wiki/Pinyin" title="Pinyin">pinyin</a>: <i><span lang="zh-Latn">pídàn</span></i>; <a href="/wiki/Jyutping" title="Jyutping">Jyutping</a>: <i><span lang="yue-Latn-jyutping">pei4 daan2</span></i>), also known as <b>alkalized</b> or <b>preserved egg</b>, are a <a href="/wiki/Chinese_cuisine" title="Chinese cuisine">Chinese</a> egg-based culinary dish made by preserving <a href="/wiki/Duck_egg" class="mw-redirect" title="Duck egg">duck</a>, <a href="/wiki/Chicken_egg" class="mw-redirect" title="Chicken egg">chicken</a>, or <a href="/wiki/Quail_eggs" title="Quail eggs">quail eggs</a> in a mixture of <a href="/wiki/Clay" title="Clay">clay</a>, <a href="/wiki/Wood_ash" title="Wood ash">ash</a>, <a href="/wiki/Salt" title="Salt">salt</a>, <a href="/wiki/Calcium_oxide" title="Calcium oxide">quicklime</a>, and <a href="/wiki/Rice_hulls" class="mw-redirect" title="Rice hulls">rice hulls</a> for several weeks to several months, depending on the processing method.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p><p>Through the process, the <a href="/wiki/Egg_yolk" class="mw-redirect" title="Egg yolk">yolk</a> becomes dark greenish grey in color, with a creamy consistency and strong flavor due to the <a href="/wiki/Hydrogen_sulfide" title="Hydrogen sulfide">hydrogen sulfide</a> and <a href="/wiki/Ammonia" title="Ammonia">ammonia</a> present, while the <a href="/wiki/Egg_white" title="Egg white">white</a> becomes dark brown in color, with a translucent jelly-like appearance and salty flavor. The transforming agent in the century egg is an <a href="/wiki/Base_(chemistry)" title="Base (chemistry)">alkaline</a> <a href="/wiki/Salt_(chemistry)" title="Salt (chemistry)">salt</a>, which gradually raises the <a href="/wiki/PH" title="PH">pH</a> of the egg to around 9–12, during the curing process.<sup id="cite_ref-McGee117_2-0" class="reference"><a href="#cite_note-McGee117-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> This chemical process breaks down some of the complex, flavorless proteins and fats, which produces a variety of smaller flavorsome compounds.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (February 2023)">citation needed</span></a></i>]</sup> </p><p>Some eggs have patterns near the surface of the egg white which are likened to <a href="/wiki/Pine" title="Pine">pine</a> branches. These patterned eggs are regarded as having better quality than the normal century eggs and are called <b>Songhua eggs</b> (<a href="/wiki/Chinese_language" title="Chinese language">Chinese</a>: <a href="https://en.wiktionary.org/wiki/%E6%9D%BE%E8%8A%B1%E8%9B%8B" class="extiw" title="wikt:松花蛋">松花蛋</a>), variously translated as <b>pine flower eggs</b> or <b>pine-patterned eggs</b>.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (February 2023)">citation needed</span></a></i>]</sup> </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="History">History</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Century_egg&action=edit&section=1" title="Edit section: History"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The method for creating century eggs likely came about through the need to preserve eggs in times of plenty by coating them in <a href="/wiki/Alkali" title="Alkali">alkaline</a> clay, which is similar to methods of egg preservation in some Western cultures.<sup id="cite_ref-hou_3-0" class="reference"><a href="#cite_note-hou-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> The clay hardens around the egg and results in the curing and creation of century eggs instead of spoiled eggs. </p><p>The century egg has at least four centuries of history behind its production. Its discovery, though not verifiable, was said to have occurred around 600 years ago in <a href="/wiki/Hunan" title="Hunan">Hunan</a> during the <a href="/wiki/Ming_Dynasty" class="mw-redirect" title="Ming Dynasty">Ming Dynasty</a>, when a homeowner discovered duck eggs in a shallow pool of <a href="/wiki/Calcium_hydroxide" title="Calcium hydroxide">slaked lime</a> that was used for mortar during construction of his home two months before. Upon tasting the eggs, he set out to produce more – this time with the addition of salt to improve their flavor – resulting in the present recipe of the century egg.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> An alternate story involves a young duck farmer by the name of <i>Shuige</i> (<span title="Chinese-language text"><span lang="zh">水哥</span></span>, <abbr style="font-size:85%" title="literal translation">lit.</abbr> water-brother), also from Hunan, leaving duck eggs in the garden of a woman by the name of <i>Songmei</i> (<span title="Chinese-language text"><span lang="zh">松妹</span></span>, <abbr style="font-size:85%" title="literal translation">lit.</abbr> pine-sister) as a courting gesture. The eggs were not discovered until the woman cleaned out the ash pit half a month later where they had turned into century eggs. In her honour, the farmer named the transformed eggs with their delicate crystalline patterns on their surfaces "pine-patterned eggs".<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> </p><p>Preserved eggs were called "Chaoszi" in the Ming Dynasty. The 17th century writer <a href="/wiki/Fang_Yizhi" title="Fang Yizhi">Fang Yizhi</a>'s "<a href="/w/index.php?title=Little_Knowledge_of_Physics&action=edit&redlink=1" class="new" title="Little Knowledge of Physics (page does not exist)">Little Knowledge of Physics</a> (物理小識) states: "The eggs produced in Chizhou are salted with five kinds of tree ash. Buckwheat grain ash is mixed to make it yellow and white, and charcoal lime is added to make it green and tough".<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Methods">Methods</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Century_egg&action=edit&section=2" title="Edit section: Methods"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-heading mw-heading3"><h3 id="Traditional">Traditional</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Century_egg&action=edit&section=3" title="Edit section: Traditional"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The traditional method for producing century eggs developed through improvement of the aforementioned primitive process. Instead of using only <a href="/wiki/Clay" title="Clay">clay</a>, a mixture of <a href="/wiki/Wood_ash" title="Wood ash">wood ash</a>, <a href="/wiki/Calcium_oxide" title="Calcium oxide">calcium oxide</a>, and <a href="/wiki/Sodium_chloride" title="Sodium chloride">salt</a> is included in the plastering mixture, thereby increasing its <a href="/wiki/PH" title="PH">pH</a> and <a href="/wiki/Sodium" title="Sodium">sodium</a> content. The addition of calcium oxide and wood ash to the mixture lowers the risk of spoilage and also increases the speed of the process. A recipe for creating century eggs starts with the infusion of 1.4 kg (3 lb) of <a href="/wiki/Camellia_sinensis" title="Camellia sinensis">tea</a> in boiling water. A smooth paste is then formed by mixing 1.4 kg (3 lb) of <a href="/wiki/Calcium_oxide" title="Calcium oxide">calcium oxide</a> (3.2 kg or 7 lb, if done in winter), 4.1 kg (9 lb) of <a href="/wiki/Sea_salt" title="Sea salt">sea salt</a>, and 3.2 kg (7 lb) of ash from burned <a href="/wiki/Oak" title="Oak">oak</a>, before being added to the tea. Each egg is individually covered by hand, with gloves worn to protect the skin from <a href="/wiki/Chemical_burn" title="Chemical burn">chemical burns</a>. It is then rolled in a mass of rice <a href="/wiki/Chaff" title="Chaff">chaff</a>, to keep the eggs from adhering to one another, before the eggs are placed in cloth-covered <a href="/wiki/Jar" title="Jar">jars</a> or tightly woven <a href="/wiki/Basket" title="Basket">baskets</a>. The mud slowly dries and hardens into a crust over several months. The eggs are then ready for consumption.<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Modern">Modern</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Century_egg&action=edit&section=4" title="Edit section: Modern"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Even though the traditional method is still widely practised, modern understanding of the chemistry behind the formation of century eggs has led to many simplifications in the recipe. Today, soaking raw eggs in a <a href="/wiki/Solution_(chemistry)" title="Solution (chemistry)">solution</a> of <a href="/wiki/Sodium_chloride" title="Sodium chloride">table salt</a>, <a href="/wiki/Calcium_hydroxide" title="Calcium hydroxide">calcium hydroxide</a> and <a href="/wiki/Sodium_carbonate" title="Sodium carbonate">sodium carbonate</a> for 10 days, followed by several weeks of aging in an airtight container, can achieve a similar effect to the traditional method. This is because the chemical reaction needed to produce century eggs is accomplished by introducing <a href="/wiki/Hydroxide" title="Hydroxide">hydroxide</a> and <a href="/wiki/Sodium" title="Sodium">sodium</a> <a href="/wiki/Ions" class="mw-redirect" title="Ions">ions</a> into the egg, regardless of the method used. </p><p>The extremely toxic compound <a href="/wiki/Lead(II)_oxide" title="Lead(II) oxide">lead(II) oxide</a> speeds up the reactions that create century eggs, leading to its use by some unscrupulous<sup class="noprint Inline-Template" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Verifiability" title="Wikipedia:Verifiability"><span title="The material near this tag failed verification of its source citation(s). (November 2022)">failed verification</span></a></i>]</sup> producers,<sup id="cite_ref-hou_3-1" class="reference"><a href="#cite_note-hou-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> whereas <a href="/wiki/Zinc_oxide" title="Zinc oxide">zinc oxide</a> is now the recommended alternative.<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> Although zinc is essential for life, excessive zinc consumption can lead to <a href="/wiki/Copper_deficiency" title="Copper deficiency">copper deficiency</a>, and the finished product should have its zinc level assessed for safety. </p> <div class="mw-heading mw-heading3"><h3 id="Chemistry_behind_the_transformation">Chemistry behind the transformation</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Century_egg&action=edit&section=5" title="Edit section: Chemistry behind the transformation"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The production of century eggs involves a complex physico-chemical transformation, wherein eggs are preserved at room temperature in an alkaline pickling solution. This process converts the egg white into a transparent, yellow gel that exhibits distinctive optical and mechanical properties. Facilitated by a high-pH environment, typically using a mixture of sodium hydroxide and salt, this method involves immersing raw eggs in a concentrated alkaline solution. The high pH causes the egg white proteins, primarily ovalbumin, to denature and then reassemble into a globular network of fine strands. This network forms through a combination of non-specific interactions, including long-range electrostatic repulsion and short-range attractions, resulting in the creation of a stable, elastic gel. Remarkably, this gel retains its structure even when boiled. Meanwhile, the egg yolk undergoes minimal changes during this process. This technique illustrates a non-specific aggregation pathway common among globular proteins, effectively utilized to preserve the eggs and significantly alter their texture. </p> <div class="mw-heading mw-heading2"><h2 id="Uses">Uses</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Century_egg&action=edit&section=6" title="Edit section: Uses"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Century eggs can be eaten without further preparation other than peeling and rinsing them – on their own, or as a side dish. In central China, they are sliced into pieces and drizzled with <a href="/wiki/Black_vinegar" title="Black vinegar">black vinegar</a> and served as a side dish. As an <i><a href="/wiki/Hors_d%27%C5%93uvre" class="mw-redirect" title="Hors d'œuvre">hors d'œuvre</a></i>, the Cantonese wrap chunks of this egg with slices of pickled <a href="/wiki/Ginger" title="Ginger">ginger root</a> (sometimes sold on a stick as <a href="/wiki/Street_food" title="Street food">street food</a>). A Shanghainese recipe mixes chopped century eggs with chilled <a href="/wiki/Tofu" title="Tofu">tofu</a>. In <a href="/wiki/Taiwan" title="Taiwan">Taiwan</a>, it is popular to eat sliced century eggs placed on top of cold <a href="/wiki/Tofu" title="Tofu">tofu</a> with <i><a href="/wiki/Katsuobushi" title="Katsuobushi">katsuobushi</a></i>, <a href="/wiki/Soy_sauce" title="Soy sauce">soy sauce</a>, and <a href="/wiki/Sesame_oil" title="Sesame oil">sesame oil</a>, in a style similar to <a href="/wiki/Japan" title="Japan">Japanese</a> <i><a href="/wiki/Hiyayakko" title="Hiyayakko">hiyayakko</a></i>. A variation of this recipe common in northern China is to slice century eggs over chilled silken (soft) <a href="/wiki/Tofu" title="Tofu">tofu</a>, add liberal quantities of shredded young ginger and chopped spring onions as a topping, and then drizzle light soy sauce and sesame oil over the dish, to taste. They are also used in a dish called old-and-fresh eggs, where chopped century eggs are combined with (or used to top) an <a href="/wiki/Omelette" title="Omelette">omelette</a> made with fresh eggs.<sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> The century eggs may also be cut into chunks and stir fried with vegetables, which is most commonly found in <a href="/wiki/Taiwanese_cuisine" title="Taiwanese cuisine">Taiwanese cuisine</a>. </p><p>Some Chinese households cut them up into small chunks and cook them with rice porridge to create "century egg and lean pork <i><a href="/wiki/Congee" title="Congee">congee</a></i>" (<a href="/wiki/Chinese_language" title="Chinese language">Chinese</a>: <span lang="zh"><span title="Chinese-language text"><span lang="zh">皮蛋瘦肉粥</span></span></span>; <a href="/wiki/Pinyin" title="Pinyin">pinyin</a>: <i><span lang="zh-Latn">pídàn shòuròu zhōu</span></i>). This is sometimes served in <a href="/wiki/Dim_sum" title="Dim sum">dim sum</a> restaurants. Rice congee, lean pork, and century egg are the main ingredients. Peeled century eggs are cut into quarters or eighths and simmered with the seasoned marinated lean slivers of pork until both ingredients are cooked into the rice congee. Fried dough sticks known as <i><a href="/wiki/Youtiao" title="Youtiao">youtiao</a></i> are commonly eaten with century egg congee. Another common variation of this dish is the addition of <a href="/wiki/Salted_duck_egg" title="Salted duck egg">salted duck eggs</a> into the congee mixture. </p><p>At special events like <a href="/wiki/Wedding_reception" title="Wedding reception">wedding banquets</a> or birthday parties, a first-course platter of sliced <a href="/wiki/Char_siu" title="Char siu">barbecued pork</a>, <a href="/wiki/Pickling" title="Pickling">pickled</a> <a href="/wiki/Leek" title="Leek">baby leeks</a>, sliced <a href="/wiki/Abalone" title="Abalone">abalone</a>, <a href="/wiki/Pickling" title="Pickling">pickled</a> <a href="/wiki/Julienning" title="Julienning">julienned</a> <a href="/wiki/Carrot" title="Carrot">carrots</a>, pickled julienned <a href="/wiki/Daikon" title="Daikon">daikon radish</a>, <a href="/wiki/Jellyfish_as_food" title="Jellyfish as food">seasoned julienned jellyfish</a>, sliced <a href="/wiki/Pork" title="Pork">pork</a>, <a href="/wiki/Head_cheese" title="Head cheese">head cheese</a> and the quartered century eggs is served. This is called a <i>lahng-poon</i> in <a href="/wiki/Cantonese" title="Cantonese">Cantonese</a>, which simply means "cold dish". </p> <div class="mw-heading mw-heading2"><h2 id="Nutritional_facts">Nutritional facts</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Century_egg&action=edit&section=7" title="Edit section: Nutritional facts"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1251242444">.mw-parser-output .ambox{border:1px solid #a2a9b1;border-left:10px solid #36c;background-color:#fbfbfb;box-sizing:border-box}.mw-parser-output .ambox+link+.ambox,.mw-parser-output .ambox+link+style+.ambox,.mw-parser-output .ambox+link+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+style+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+link+.ambox{margin-top:-1px}html body.mediawiki .mw-parser-output .ambox.mbox-small-left{margin:4px 1em 4px 0;overflow:hidden;width:238px;border-collapse:collapse;font-size:88%;line-height:1.25em}.mw-parser-output .ambox-speedy{border-left:10px solid #b32424;background-color:#fee7e6}.mw-parser-output .ambox-delete{border-left:10px solid #b32424}.mw-parser-output .ambox-content{border-left:10px solid #f28500}.mw-parser-output .ambox-style{border-left:10px solid #fc3}.mw-parser-output .ambox-move{border-left:10px solid #9932cc}.mw-parser-output .ambox-protection{border-left:10px solid #a2a9b1}.mw-parser-output .ambox .mbox-text{border:none;padding:0.25em 0.5em;width:100%}.mw-parser-output .ambox .mbox-image{border:none;padding:2px 0 2px 0.5em;text-align:center}.mw-parser-output .ambox .mbox-imageright{border:none;padding:2px 0.5em 2px 0;text-align:center}.mw-parser-output .ambox .mbox-empty-cell{border:none;padding:0;width:1px}.mw-parser-output .ambox .mbox-image-div{width:52px}@media(min-width:720px){.mw-parser-output .ambox{margin:0 10%}}@media print{body.ns-0 .mw-parser-output .ambox{display:none!important}}</style><table class="box-Unreferenced_section plainlinks metadata ambox ambox-content ambox-Unreferenced" role="presentation"><tbody><tr><td class="mbox-image"><div class="mbox-image-div"><span typeof="mw:File"><a href="/wiki/File:Question_book-new.svg" class="mw-file-description"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/50px-Question_book-new.svg.png" decoding="async" width="50" height="39" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/75px-Question_book-new.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/100px-Question_book-new.svg.png 2x" data-file-width="512" data-file-height="399" /></a></span></div></td><td class="mbox-text"><div class="mbox-text-span">This section <b>does not <a href="/wiki/Wikipedia:Citing_sources" title="Wikipedia:Citing sources">cite</a> any <a href="/wiki/Wikipedia:Verifiability" title="Wikipedia:Verifiability">sources</a></b>.<span class="hide-when-compact"> Please help <a href="/wiki/Special:EditPage/Century_egg" title="Special:EditPage/Century egg">improve this section</a> by <a href="/wiki/Help:Referencing_for_beginners" title="Help:Referencing for beginners">adding citations to reliable sources</a>. Unsourced material may be challenged and <a href="/wiki/Wikipedia:Verifiability#Burden_of_evidence" title="Wikipedia:Verifiability">removed</a>.</span> <span class="date-container"><i>(<span class="date">June 2024</span>)</i></span><span class="hide-when-compact"><i> (<small><a href="/wiki/Help:Maintenance_template_removal" title="Help:Maintenance template removal">Learn how and when to remove this message</a></small>)</i></span></div></td></tr></tbody></table> <p>Research indicates that century eggs are an excellent source of Vitamin B12, which is crucial for metabolism and DNA synthesis. The yolk of century eggs typically contains about 1.9 ± 0.6 to 0.8 ± 0.3 μg of vitamin B12, which is notably higher than the 0.9 μg per 100 grams found in traditional chicken eggs, concentrated primarily in the yolk. Despite undergoing an alkaline preservation process, which could potentially impact their nutrient content, century eggs maintain a substantial amount of Vitamin B12. Furthermore, the conditions of this preservation do not compromise the B12 content, underscoring the nutritional resilience of these eggs. </p><p>A key feature of century eggs is the bioavailability of Vitamin B12 during digestion. Studies demonstrate that during in vitro gastric digestion, a significant amount of the Vitamin B12 in the yolk of century eggs is released in a free form, enhancing its digestibility compared to that in regular cooked eggs. For instance, approximately 52% of the B12 from century egg yolk converts to a form that is easily absorbed, far exceeding the conversion rates in standard boiled or fried chicken eggs. This improved bioavailability is particularly significant as absorption of Vitamin B12 from dietary sources can be generally inefficient, especially from plant-based foods. Thus, for people with dietary restrictions or preference. </p> <div class="mw-heading mw-heading2"><h2 id="Misconception_and_etymology">Misconception and etymology</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Century_egg&action=edit&section=8" title="Edit section: Misconception and etymology"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Century eggs are sometimes avoided due to the belief that they are prepared by soaking eggs in <a href="/wiki/Horse" title="Horse">horse</a> <a href="/wiki/Urine" title="Urine">urine</a> for 100 years, but there is no valid evidence to support this.<sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> In <a href="/wiki/Thai_language" title="Thai language">Thai</a> and <a href="/wiki/Lao_language" title="Lao language">Lao</a>, the common word for century egg translates to "horse urine egg", due to the distinctive urine-like odor of the food: </p> <ul><li><a href="/wiki/Thai_language" title="Thai language">Thai</a>: <span lang="th"><a href="https://en.wiktionary.org/wiki/%E0%B9%84%E0%B8%82%E0%B9%88%E0%B9%80%E0%B8%A2%E0%B8%B5%E0%B9%88%E0%B8%A2%E0%B8%A7%E0%B8%A1%E0%B9%89%E0%B8%B2" class="extiw" title="wikt:ไข่เยี่ยวม้า">ไข่เยี่ยวม้า</a></span> <span class="IPA nowrap" lang="th-Latn-fonipa"><a href="/wiki/Help:IPA/Thai" title="Help:IPA/Thai">[kʰàj<span class="wrap"> </span>jîaw<span class="wrap"> </span>máː]</a></span> (<a href="/wiki/Royal_Thai_General_System_of_Transcription" title="Royal Thai General System of Transcription">RTGS</a>: <i>khai yiao ma</i>)</li> <li><a href="/wiki/Lao_language" title="Lao language">Lao</a>: <span lang="lo"><a href="https://en.wiktionary.org/wiki/%E0%BB%84%E0%BA%82%E0%BB%88%E0%BA%8D%E0%BB%88%E0%BA%BD%E0%BA%A7%E0%BA%A1%E0%BB%89%E0%BA%B2" class="extiw" title="wikt:ໄຂ່ຍ່ຽວມ້າ">ໄຂ່ຍ່ຽວມ້າ</a></span> <span class="IPA nowrap" lang="lo-Latn-fonipa"><a href="/wiki/Help:IPA/Lao" title="Help:IPA/Lao">[kʰāj<span class="wrap"> </span>ɲīaw<span class="wrap"> </span>mâː]</a></span></li></ul> <div class="mw-heading mw-heading2"><h2 id="Safety">Safety</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Century_egg&action=edit&section=9" title="Edit section: Safety"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Century eggs prepared in traditional ways are generally safe to consume. However, there have been incidents of malpractice in century egg production that causes eggs to be contaminated. In 2013, three factories in <a href="/wiki/Jiangxi" title="Jiangxi">Jiangxi province</a> were found to be using industrial <a href="/wiki/Copper_sulphate" class="mw-redirect" title="Copper sulphate">copper sulphate</a> in century egg production to shorten the production time. The industrial copper sulphate was contaminated with heavy metals and toxic chemicals.<sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> The incident was exposed on China's national broadcaster <a href="/wiki/China_Central_Television" title="China Central Television">CCTV</a>, causing local officials to shut down 30 factories for inspection. The police arrested three people involved in the case and seized four businesses involved in the case.<sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Gallery">Gallery</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Century_egg&action=edit&section=10" title="Edit section: Gallery"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul class="gallery mw-gallery-packed"> <li class="gallerybox" style="width: 113.33333333333px"> <div class="thumb" style="width: 111.33333333333px;"><span typeof="mw:File"><a href="/wiki/File:Century_egg1.jpg" class="mw-file-description" title="Century egg coated in a caustic mixture of mud and rice husk"><img alt="Century egg coated in a caustic mixture of mud and rice husk" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/44/Century_egg1.jpg/167px-Century_egg1.jpg" decoding="async" width="112" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/44/Century_egg1.jpg/251px-Century_egg1.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/4/44/Century_egg1.jpg 2x" data-file-width="329" data-file-height="354" /></a></span></div> <div class="gallerytext">Century egg coated in a <a href="/wiki/Corrosive_substance" class="mw-redirect" title="Corrosive substance">caustic</a> mixture of mud and rice husk</div> </li> <li class="gallerybox" style="width: 132.66666666667px"> <div class="thumb" style="width: 130.66666666667px;"><span typeof="mw:File"><a href="/wiki/File:Century_egg_snow_flake.jpg" class="mw-file-description" title="Century egg showing snow-flake/pine-branch (松花, sōnghuā) patterns. These patterns are dendrites of various salts."><img alt="Century egg showing snow-flake/pine-branch (松花, sōnghuā) patterns. These patterns are dendrites of various salts." src="//upload.wikimedia.org/wikipedia/commons/thumb/1/1b/Century_egg_snow_flake.jpg/196px-Century_egg_snow_flake.jpg" decoding="async" width="131" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/1b/Century_egg_snow_flake.jpg/294px-Century_egg_snow_flake.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/1b/Century_egg_snow_flake.jpg/391px-Century_egg_snow_flake.jpg 2x" data-file-width="424" data-file-height="390" /></a></span></div> <div class="gallerytext">Century egg showing snow-flake/pine-branch (<a href="https://en.wiktionary.org/wiki/%E6%9D%BE%E8%8A%B1" class="extiw" title="wikt:松花">松花</a>, <i>sōnghuā</i>) patterns. These patterns are <a href="/wiki/Dendrite_(crystal)" title="Dendrite (crystal)">dendrites</a> of various <a href="/wiki/Salt_(chemistry)" title="Salt (chemistry)">salts.</a></div> </li> <li class="gallerybox" style="width: 162px"> <div class="thumb" style="width: 160px;"><span typeof="mw:File"><a href="/wiki/File:Arranged_century_egg_on_a_plate.jpg" class="mw-file-description" title="Arranged century egg on a plate"><img alt="Arranged century egg on a plate" src="//upload.wikimedia.org/wikipedia/commons/thumb/d/dd/Arranged_century_egg_on_a_plate.jpg/240px-Arranged_century_egg_on_a_plate.jpg" decoding="async" width="160" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/dd/Arranged_century_egg_on_a_plate.jpg/360px-Arranged_century_egg_on_a_plate.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/dd/Arranged_century_egg_on_a_plate.jpg/480px-Arranged_century_egg_on_a_plate.jpg 2x" data-file-width="640" data-file-height="480" /></a></span></div> <div class="gallerytext">Arranged century egg on a plate</div> </li> <li class="gallerybox" style="width: 162px"> <div class="thumb" style="width: 160px;"><span typeof="mw:File"><a href="/wiki/File:CenturyEgg.JPG" class="mw-file-description" title="Century egg with congee"><img alt="Century egg with congee" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/02/CenturyEgg.JPG/240px-CenturyEgg.JPG" decoding="async" width="160" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/02/CenturyEgg.JPG/360px-CenturyEgg.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/02/CenturyEgg.JPG/480px-CenturyEgg.JPG 2x" data-file-width="2592" data-file-height="1944" /></a></span></div> <div class="gallerytext">Century egg with <a href="/wiki/Congee" title="Congee">congee</a></div> </li> <li class="gallerybox" style="width: 92px"> <div class="thumb" style="width: 90px;"><span typeof="mw:File"><a href="/wiki/File:Century_eggs_for_sale_in_Hong_Kong_by_tracyhunter.jpg" class="mw-file-description" title="Century eggs for sale in Hong Kong"><img alt="Century eggs for sale in Hong Kong" src="//upload.wikimedia.org/wikipedia/commons/thumb/3/32/Century_eggs_for_sale_in_Hong_Kong_by_tracyhunter.jpg/135px-Century_eggs_for_sale_in_Hong_Kong_by_tracyhunter.jpg" decoding="async" width="90" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/32/Century_eggs_for_sale_in_Hong_Kong_by_tracyhunter.jpg/202px-Century_eggs_for_sale_in_Hong_Kong_by_tracyhunter.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/32/Century_eggs_for_sale_in_Hong_Kong_by_tracyhunter.jpg/270px-Century_eggs_for_sale_in_Hong_Kong_by_tracyhunter.jpg 2x" data-file-width="768" data-file-height="1024" /></a></span></div> <div class="gallerytext">Century eggs for sale in <a href="/wiki/Hong_Kong" title="Hong Kong">Hong Kong</a></div> </li> <li class="gallerybox" style="width: 82px"> <div class="thumb" style="width: 80px;"><span typeof="mw:File"><a href="/wiki/File:Khai_nyiau_ma.jpg" class="mw-file-description" title="Pink century eggs in Laos"><img alt="Pink century eggs in Laos" src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c2/Khai_nyiau_ma.jpg/120px-Khai_nyiau_ma.jpg" decoding="async" width="80" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c2/Khai_nyiau_ma.jpg/179px-Khai_nyiau_ma.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c2/Khai_nyiau_ma.jpg/239px-Khai_nyiau_ma.jpg 2x" data-file-width="2000" data-file-height="3008" /></a></span></div> <div class="gallerytext">Pink century eggs in Laos</div> </li> </ul> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Century_egg&action=edit&section=11" title="Edit section: See also"><span>edit</span></a><span 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portalborder portalright"> <li class="portalbox-entry"><span class="portalbox-image"><span class="noviewer" typeof="mw:File"><a href="/wiki/File:Foodlogo2.svg" class="mw-file-description"><img alt="icon" src="//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Foodlogo2.svg/32px-Foodlogo2.svg.png" decoding="async" width="32" height="23" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Foodlogo2.svg/48px-Foodlogo2.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Foodlogo2.svg/64px-Foodlogo2.svg.png 2x" data-file-width="146" data-file-height="106" /></a></span></span><span class="portalbox-link"><a href="/wiki/Portal:Food" title="Portal:Food">Food portal</a></span></li><li class="portalbox-entry"><span class="portalbox-image"><span class="mw-image-border noviewer" typeof="mw:File"><span><img alt="flag" src="//upload.wikimedia.org/wikipedia/commons/thumb/f/fa/Flag_of_the_People%27s_Republic_of_China.svg/32px-Flag_of_the_People%27s_Republic_of_China.svg.png" decoding="async" width="32" height="21" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/fa/Flag_of_the_People%27s_Republic_of_China.svg/48px-Flag_of_the_People%27s_Republic_of_China.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/fa/Flag_of_the_People%27s_Republic_of_China.svg/64px-Flag_of_the_People%27s_Republic_of_China.svg.png 2x" data-file-width="900" data-file-height="600" /></span></span></span><span class="portalbox-link"><a href="/wiki/Portal:China" title="Portal:China">China portal</a></span></li></ul> <style data-mw-deduplicate="TemplateStyles:r1184024115">.mw-parser-output .div-col{margin-top:0.3em;column-width:30em}.mw-parser-output .div-col-small{font-size:90%}.mw-parser-output .div-col-rules{column-rule:1px solid #aaa}.mw-parser-output .div-col dl,.mw-parser-output .div-col ol,.mw-parser-output .div-col ul{margin-top:0}.mw-parser-output .div-col li,.mw-parser-output .div-col dd{page-break-inside:avoid;break-inside:avoid-column}</style><div class="div-col"> <ul><li><a href="/wiki/Balut_(food)" title="Balut (food)">Balut (food)</a> – Bird embryo steamed and eaten from the shell</li> <li><a href="/wiki/Iron_egg" title="Iron egg">Iron egg</a> – Egg-based dish from Taiwan</li> <li><a href="/wiki/Pickled_egg" title="Pickled egg">Pickled egg</a> – Hard boiled eggs cured in vinegar or brine</li> <li><a href="/wiki/Salted_duck_egg" title="Salted duck egg">Salted duck egg</a> – Traditional Asian dish common in several regions</li> <li><a href="/wiki/Smoked_egg" title="Smoked egg">Smoked egg</a> – Food that involves the smoking of eggs</li> <li><a href="/wiki/Soy_egg" title="Soy egg">Soy egg</a> – Egg dishes</li> <li><a href="/wiki/Tea_egg" title="Tea egg">Tea egg</a> – Egg boiled in tea as a savory snack</li> <li><a href="/wiki/Chinese_red_eggs" title="Chinese red eggs">Chinese red eggs</a></li> <li><a href="/wiki/Virgin_boy_egg" title="Virgin boy egg">Virgin boy egg</a> – Traditional dish of Dongyang, Zhejiang, China</li></ul> </div> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Century_egg&action=edit&section=12" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-heading mw-heading3"><h3 id="Citations">Citations</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Century_egg&action=edit&section=13" title="Edit section: Citations"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap mw-references-columns"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite id="CITEREFMoskvitch2013" class="citation news cs1">Moskvitch, Katia (29 March 2013). <a rel="nofollow" class="external text" href="https://www.bbc.co.uk/news/technology-21929307">"Black eggs and ripe guava lead Taiwan's tech revolution"</a>. <i>BBC News</i><span class="reference-accessdate">. Retrieved <span class="nowrap">29 March</span> 2013</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=BBC+News&rft.atitle=Black+eggs+and+ripe+guava+lead+Taiwan%27s+tech+revolution&rft.date=2013-03-29&rft.aulast=Moskvitch&rft.aufirst=Katia&rft_id=https%3A%2F%2Fwww.bbc.co.uk%2Fnews%2Ftechnology-21929307&rfr_id=info%3Asid%2Fen.wikipedia.org%3ACentury+egg" class="Z3988"></span></span> </li> <li id="cite_note-McGee117-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-McGee117_2-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMcGee2004" class="citation book cs1"><a href="/wiki/Harold_McGee" title="Harold McGee">McGee, Harold</a> (2004). <i>On Food and Cooking: The Science and Lore of the Kitchen</i>. 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"<a rel="nofollow" class="external text" href="http://chemistry.about.com/b/2008/10/16/are-century-eggs-soaked-in-horse-urine.htm">What Are Century Eggs?</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20111126105026/http://chemistry.about.com/b/2008/10/16/are-century-eggs-soaked-in-horse-urine.htm">Archived</a> 2011-11-26 at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a>" <i><a href="/wiki/About.com" class="mw-redirect" title="About.com">About.com</a></i>. Thursday 16 October 2008. Retrieved on 20 October 2009.</span> </li> <li id="cite_note-11"><span class="mw-cite-backlink"><b><a href="#cite_ref-11">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFLi_Jing2013" class="citation web cs1">Li Jing (16 June 2013). <a rel="nofollow" class="external text" href="http://www.scmp.com/news/china/article/1261750/preserved-egg-plants-shut-toxic-chemical-scandal">"Preserved egg companies shut in toxic chemical scandal"</a>. <i><a href="/wiki/South_China_Morning_Post" title="South China Morning Post">South China Morning Post</a></i><span class="reference-accessdate">. Retrieved <span class="nowrap">17 November</span> 2019</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=South+China+Morning+Post&rft.atitle=Preserved+egg+companies+shut+in+toxic+chemical+scandal&rft.date=2013-06-16&rft.au=Li+Jing&rft_id=http%3A%2F%2Fwww.scmp.com%2Fnews%2Fchina%2Farticle%2F1261750%2Fpreserved-egg-plants-shut-toxic-chemical-scandal&rfr_id=info%3Asid%2Fen.wikipedia.org%3ACentury+egg" class="Z3988"></span></span> </li> <li id="cite_note-12"><span class="mw-cite-backlink"><b><a href="#cite_ref-12">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://jx.sina.com.cn/news/m/2013-06-19/142134403.html">"南昌毒皮蛋4家涉案企业被查封 3人被抓获_新浪江西城事_新浪江西"</a>. <i>jx.sina.com.cn</i><span class="reference-accessdate">. Retrieved <span class="nowrap">2020-12-21</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=jx.sina.com.cn&rft.atitle=%E5%8D%97%E6%98%8C%E6%AF%92%E7%9A%AE%E8%9B%8B4%E5%AE%B6%E6%B6%89%E6%A1%88%E4%BC%81%E4%B8%9A%E8%A2%AB%E6%9F%A5%E5%B0%81+3%E4%BA%BA%E8%A2%AB%E6%8A%93%E8%8E%B7_%E6%96%B0%E6%B5%AA%E6%B1%9F%E8%A5%BF%E5%9F%8E%E4%BA%8B_%E6%96%B0%E6%B5%AA%E6%B1%9F%E8%A5%BF&rft_id=http%3A%2F%2Fjx.sina.com.cn%2Fnews%2Fm%2F2013-06-19%2F142134403.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3ACentury+egg" class="Z3988"></span></span> </li> </ol></div></div> <div class="mw-heading mw-heading3"><h3 id="Sources">Sources</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Century_egg&action=edit&section=14" title="Edit section: Sources"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHo1988" class="citation book cs1">Ho, Mabel (1988). <i>Chemistry Potpourri : Unlocking Chemistry through Investigations</i>. Singapore: Toppan. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-981-00-0454-5" title="Special:BookSources/978-981-00-0454-5"><bdi>978-981-00-0454-5</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Chemistry+Potpourri+%3A+Unlocking+Chemistry+through+Investigations&rft.place=Singapore&rft.pub=Toppan&rft.date=1988&rft.isbn=978-981-00-0454-5&rft.aulast=Ho&rft.aufirst=Mabel&rfr_id=info%3Asid%2Fen.wikipedia.org%3ACentury+egg" class="Z3988"></span></li> <li>Taiwan Livestock Research Institute and Philippine Council for Agriculture (2001) <a rel="nofollow" class="external text" href="https://web.archive.org/web/20081202064446/http://www.fftc.agnet.org/library/pt/2001028/">Enhancing the Value of Eggs: How to Make Balut and Century Eggs</a>. Retrieved 24 March 2007.</li></ul> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Century_egg&action=edit&section=15" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><span class="noviewer" typeof="mw:File"><a href="/wiki/File:Commons-logo.svg" class="mw-file-description"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/12px-Commons-logo.svg.png" decoding="async" width="12" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/18px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/24px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /></a></span> Media related to <a href="https://commons.wikimedia.org/wiki/Category:Century_Egg" class="extiw" title="commons:Category:Century Egg">Century Egg</a> at Wikimedia Commons</li> <li><span class="noviewer" typeof="mw:File"><a href="/wiki/File:Wikibooks-logo-en-noslogan.svg" class="mw-file-description"><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/d/df/Wikibooks-logo-en-noslogan.svg/16px-Wikibooks-logo-en-noslogan.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/df/Wikibooks-logo-en-noslogan.svg/24px-Wikibooks-logo-en-noslogan.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/df/Wikibooks-logo-en-noslogan.svg/32px-Wikibooks-logo-en-noslogan.svg.png 2x" data-file-width="400" data-file-height="400" /></a></span> <a href="https://en.wikibooks.org/wiki/Cookbook:century_egg" class="extiw" title="wikibooks:Cookbook:century egg">century egg</a> at the Wikibooks Cookbook subproject</li></ul> <div class="navbox-styles"><style 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abbr{color:var(--color-base)!important}@media(prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}}@media print{.mw-parser-output .navbar{display:none!important}}</style><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Eggs" title="Template:Eggs"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Eggs" title="Template talk:Eggs"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Eggs" title="Special:EditPage/Template:Eggs"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Eggs" style="font-size:114%;margin:0 4em"><a href="/wiki/Egg" title="Egg">Eggs</a></div></th></tr><tr><td class="navbox-abovebelow" colspan="2"><div><a href="/wiki/List_of_egg_topics" title="List of egg topics">List of egg topics</a></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Types</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Bird_egg" title="Bird egg">Bird</a></li> <li><a href="/wiki/Egg#Fish_and_amphibian_eggs" title="Egg">Fish and amphibian</a></li> <li><a href="/wiki/Monotreme" title="Monotreme">Monotreme</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Egg_fossil" title="Egg fossil">Fossil record</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Cephalopod_egg_fossil" title="Cephalopod egg fossil">Cephalopod</a></li> <li><a href="/wiki/Fish_egg_fossil" title="Fish egg fossil">Fish</a></li> <li><a href="/wiki/Reptile_egg_fossil" title="Reptile egg fossil">Reptile</a> (<a href="/wiki/Dinosaur_egg" title="Dinosaur egg">dinosaur</a>)</li> <li><a href="/wiki/Egg_paleopathology" title="Egg paleopathology">Pathology</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Biology</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Egg_allergy" title="Egg allergy">Allergy</a></li> <li><a href="/wiki/Egg_cell" title="Egg cell">Egg cell</a></li> <li><a href="/wiki/Embryo" title="Embryo">Embryo</a></li> <li><a href="/wiki/Ichthyoplankton" title="Ichthyoplankton">Ichthyoplankton</a></li> <li><a href="/wiki/Oogamy" title="Oogamy">Oogamy</a></li> <li><a href="/wiki/Oogenesis" title="Oogenesis">Oogenesis</a></li> <li><a href="/wiki/Ootheca" title="Ootheca">Ootheca</a></li> <li><a href="/wiki/Ovary" title="Ovary">Ovary</a></li> <li><a href="/wiki/Oviduct" title="Oviduct">Oviduct</a></li> <li><a href="/wiki/Oviparity" title="Oviparity">Oviparity</a></li> <li><a href="/wiki/Ovoviviparity" title="Ovoviviparity">Ovoviviparity</a></li> <li><a href="/wiki/Ovulation" title="Ovulation">Ovulation</a></li> <li><a href="/wiki/Spawn_(biology)" class="mw-redirect" title="Spawn (biology)">Spawn</a></li> <li><a href="/wiki/Egg_tooth" title="Egg tooth">Tooth</a></li> <li><a href="/wiki/Trophic_egg" title="Trophic egg">Trophic</a></li> <li><a href="/wiki/Zygote" title="Zygote">Zygote</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Components</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Yolk" title="Yolk">Yolk</a></li> <li><a href="/wiki/Egg_white" title="Egg white">White</a></li> <li><a href="/wiki/Eggshell" title="Eggshell">Shell</a> and <a href="/wiki/Eggshell_membrane" title="Eggshell membrane">membrane</a></li> <li><a href="/wiki/Chalaza" title="Chalaza">Chalaza</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Eggs_as_food" title="Eggs as food">As food</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/List_of_egg_dishes" title="List of egg dishes">List of egg dishes</a></li> <li><a href="/wiki/Balut_(food)" title="Balut (food)">Balut</a></li> <li><a href="/wiki/Eggs_Benedict" title="Eggs Benedict">Benedict</a></li> <li><a href="/wiki/Boiled_egg" title="Boiled egg">Boiled</a></li> <li><a class="mw-selflink selflink">Century</a></li> <li><a href="/wiki/Coddled_egg" title="Coddled egg">Coddled</a></li> <li><a href="/wiki/List_of_custard_desserts" title="List of custard desserts">Custard desserts</a></li> <li><a href="/wiki/Deep_fried_egg" title="Deep fried egg">Deep fried</a></li> <li><a href="/wiki/Deviled_egg" title="Deviled egg">Deviled</a></li> <li><a href="/wiki/Eggnog" title="Eggnog">Eggnog</a></li> <li><a href="/wiki/Fried_egg" title="Fried egg">Fried</a></li> <li><a href="/wiki/Iron_egg" title="Iron egg">Iron</a></li> <li><a href="/wiki/Meringue" title="Meringue">Meringue</a></li> <li><a href="/wiki/Omelette" title="Omelette">Omelette</a></li> <li><a href="/wiki/Onsen_tamago" title="Onsen tamago">Onsen tamago</a></li> <li><a href="/wiki/Poached_egg" title="Poached egg">Poached</a></li> <li><a href="/wiki/Powdered_egg" class="mw-redirect" title="Powdered egg">Powdered</a></li> <li><a href="/wiki/Pickled_egg" title="Pickled egg">Pickled</a></li> <li><a href="/wiki/Quiche" title="Quiche">Quiche</a></li> <li><a href="/wiki/Roe" title="Roe">Roe</a></li> <li><a href="/wiki/Egg_salad" title="Egg salad">Salad</a></li> <li><a href="/wiki/Salted_duck_egg" title="Salted duck egg">Salted</a></li> <li><a href="/wiki/Scotch_egg" title="Scotch egg">Scotch</a></li> <li><a href="/wiki/Scrambled_eggs" title="Scrambled eggs">Scrambled</a></li> <li><a href="/wiki/Shirred_eggs" title="Shirred eggs">Shirred</a></li> <li><a href="/wiki/Smoked_egg" title="Smoked egg">Smoked</a></li> <li><a href="/wiki/Souffl%C3%A9" title="Soufflé">Soufflé</a></li> <li><a href="/wiki/Tea_egg" title="Tea egg">Tea</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Category:Eggs_in_culture" title="Category:Eggs in culture">In culture</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Egg_balancing" title="Egg balancing">Balancing</a></li> <li><a href="/wiki/Egg_carton" title="Egg carton">Carton</a></li> <li><a href="/wiki/Egg_decorating" title="Egg decorating">Decorating</a></li> <li><a href="/wiki/Easter_egg" title="Easter egg">Easter egg</a></li> <li><a href="/wiki/Egg-and-spoon_race" title="Egg-and-spoon race">Egg-and-spoon race</a></li> <li><a href="/wiki/Egg_drop_competition" title="Egg drop competition">Egg drop competition</a></li> <li><a href="/wiki/Egging" title="Egging">Egging</a></li> <li><a href="/wiki/Faberg%C3%A9_egg" title="Fabergé egg">Fabergé egg</a></li> <li><a href="/wiki/Free-range_egg" class="mw-redirect" title="Free-range egg">Free range</a></li> <li><a href="/wiki/HowToBasic" title="HowToBasic">HowToBasic</a></li> <li><a href="/wiki/Humpty_Dumpty" title="Humpty Dumpty">Humpty Dumpty</a></li> <li><a href="/wiki/Egg_hunt" title="Egg hunt">Hunt</a></li> <li><a href="/wiki/Oology" title="Oology">Oology</a></li> <li><a href="/wiki/Oomancy" title="Oomancy">Oomancy</a></li> <li><a href="/wiki/Organic_egg_production" title="Organic egg production">Organic</a></li> <li><a href="/wiki/Category:Egg_organizations" title="Category:Egg organizations">Organizations</a></li> <li><a href="/wiki/Ovo_vegetarianism" title="Ovo vegetarianism">Ovo vegetarianism</a></li> <li><a href="/wiki/Pysanka" class="mw-redirect" title="Pysanka">Pysanka</a> <ul><li><a href="/wiki/Vegreville_egg" title="Vegreville egg">Vegreville egg</a></li></ul></li> <li><a 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