Food | Definition & Nutrition

<!doctype html> <html lang="en" class="topic-desktop ui-ie7 ui-ie"> <head prefix="og: https://ogp.me/ns# fb: https://ogp.me/ns/fb#"> <meta charset="utf-8"> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0" /> <link rel="dns-prefetch" href="https://cdn.britannica.com/mendel-resources/3-134"> <link rel="preconnect" href="https://cdn.britannica.com/mendel-resources/3-134"> <link rel="preload" as="script" href="https://www.googletagservices.com/tag/js/gpt.js" /> <link rel="icon" href="/favicon.png" /> <meta name="description" content="Food, substance consisting of protein, carbohydrate, fat, and other nutrients used in the body of an organism to sustain growth and vital processes and to furnish energy. The absorption and utilization of food by the body is fundamental to nutrition and is facilitated by digestion. Learn more about food." /> <meta name="keywords" content="food, encyclopedia, encyclopeadia, britannica, article" /> <link rel="canonical" href="https://www.britannica.com/topic/food" /> <title>Food | Definition & Nutrition | Britannica</title>  <script> !function(){"use strict";function e(e){const t=e.match(/((?=([a-z0-9._!#$%+^&*()[\]<>-]+))\2@[a-z0-9._-]+\.[a-z0-9._-]+)/gi);return t?t[0]:""}function t(t){return e(a(t.toLowerCase()))}function a(e){return e.replace(/\s/g,"")}async function n(e){const t={sha256Hash:"",sha1Hash:""};if(!("msCrypto"in window)&&"https:"===location.protocol&&"crypto"in window&&"TextEncoder"in window){const a=(new TextEncoder).encode(e),[n,c]=await Promise.all([s("SHA-256",a),s("SHA-1",a)]);t.sha256Hash=n,t.sha1Hash=c}return t}async function s(e,t){const a=await crypto.subtle.digest(e,t);return Array.from(new Uint8Array(a)).map(e=>("00"+e.toString(16)).slice(-2)).join("")}function c(e){let t=!0;return Object.keys(e).forEach(a=>{0===e[a].length&&(t=!1)}),t}function i(e,t,a){e.splice(t,1);const n="?"+e.join("&")+a.hash;history.replaceState(null,"",n)}var o={checkEmail:e,validateEmail:t,trimInput:a,hashEmail:n,hasHashes:c,removeEmailAndReplaceHistory:i,detectEmails:async function(){const e=new URL(window.location.href),a=Array.from(e.searchParams.entries()).map(e=>`=`);let s,o;const r=["adt_eih","sh_kit"];if(a.forEach((e,t)=>{const a=decodeURIComponent(e),[n,c]=a.split("=");if("adt_ei"===n&&(s={value:c,index:t,emsrc:"url"}),r.includes(n)){o={value:c,index:t,emsrc:"sh_kit"===n?"urlhck":"urlh"}}}),s)t(s.value)&&n(s.value).then(e=>{if(c(e)){const t={value:e,created:Date.now()};localStorage.setItem("adt_ei",JSON.stringify(t)),localStorage.setItem("adt_emsrc",s.emsrc)}});else if(o){const e={value:{sha256Hash:o.value,sha1Hash:""},created:Date.now()};localStorage.setItem("adt_ei",JSON.stringify(e)),localStorage.setItem("adt_emsrc",o.emsrc)}s&&i(a,s.index,e),o&&i(a,o.index,e)},cb:"adthrive"};const{detectEmails:r,cb:l}=o;r()}(); </script> <script type="text/javascript" data-type="Init Mendel"> window.$UI = {}; window.Constants = {"LICENSE_URL": "/bps/license","DEFAULT_TEST_VERSION": "A","DEFAULT_STATE": "XX","QUIZ_URL": "/quiz","SPOTLIGHT_BROWSE_URL": "/stories/spotlight","CONTENT_TYPE_TEXT": "text/plain;charset=UTF-8","TOPIC_FACTS_DATA_URL": "/facts","QUIZ_BROWSE_IMAGE_QUIZZES": "images","TOPIC_MEDIA_PATH": "/images-videos","USER_PROFILE_URL": "/user","DEBUG_URL": "/debug","ONE_GOOD_FACT_URL": "/one-good-fact","ERROR_404_URL": "/error404","PROCON_CITED_IN_THE_NEWS_URL": "/procon/ProCon-in-the-News","PROCON_URL": "/procon","TOPIC_PAGE_CONTENT_AJAX_URL": "/topic-content/page","INFINITE_SCROLL_PREFIX_URL": "/scroll","TOPIC_TOP_QUESTION_BROWSE_URL": "/questions","CC_USD": "USD","domain": "britannica.com","PROCON_EDITOR_ID": "12941390","SURVEY_URL": "/survey","CATEGORY_BROWSE_URL": "/browse","STORY_BROWSE_URL": "/stories","COUNTRY_US": "US","OPEN_MEDIA_OVERLAY_PARAMETER": "/media","NEWSLETTER_SUBSCRIPTION_URL": "/newsletter-subscription","MAINTENANCE_ERROR_URL": "https://maintenance.eb.com","IMARS_EDITOR_ID": "12365882","PROFILE_EB_EDITOR_URL": "/editor","WEB_INF_RESOURCES_PATH": "WEB-INF/resources","AI_ABOUT_PAGE_URL": "/about-britannica-ai","TOPIC_ADDITIONAL_INFO_PATH": "/additional-info","SUDOKU_GAME_URL": "/games/sudoku","CC_INR": "INR","ARTICLE_PRINT_URL": "/print/article","FIRST_EDITION_URL": "/subscriber/firstedition","WW1_PORTAL_URL": "/discover/World-War-I","MENDEL_COOKIE": "__mendel","topicUrlClasses": "[topic, animal, art, biography, event, place, plant, science, sports, technology, procon, money]","DEMYSTIFIED_BROWSE_URL": "/stories/demystified","LIST_BROWSE_URL": "/list/browse","PROFILE_EXPERT_URL": "/contributor","ASSEMBLY_IMAGE_URL": "/image/assembly","DAY_IN_HISTORY_URL": "/on-this-day","DEFAULT_CURRENCY": "USD","CONTENT_TYPE_XML": "text/xml;charset=UTF-8","PORTAL_FINANCE_BROWSE_URL_PREFIX": "/money/browse","ERROR_400_URL": "/error400","MONEY_IMARS_CATEGORY": "13000","AJAX_PREFIX_URL": "/ajax","TOPIC_BROWSE_URL": "/topic-browse","MARKETING_CONTENT": "/marketing-content","ENV_RUNTIME": "runtime","GALLERY_URL": "/gallery","topicUrlClassesList": "topic|animal|art|biography|event|place|plant|science|sports|technology|procon","CONTENT_TYPE_HTML": "text/html;charset=UTF-8","ENV_LOCAL": "override","MEDIA_OVERLAY_URL": "/media-overlay","CHATBOT_PAGE_URL": "/chatbot","NEWSLETTER_PAGE_URL": "/newsletters","EXPLORE_URL": "/explore","ENV_DEV": "development","MEDIA_URL": "/media","TOPIC_TOP_QUESTION_URL": "/question","PORTAL_FINANCE_URL_PREFIX": "/money","PODCASTS_URL": "/podcasts","STAND_ALONE_VIDEO_URL": "/video","MORE_ON_THIS_DAY_URL": "/more-on-this-day","TOPIC_QUOTES_URL": "/quotes","SEARCH_PAGE_URL": "/search","PROCON_CLASS": "PROCON","KUSTOM_MENDEL_APPLICATION_ID": "1","TOPIC_CONTENT_AJAX_URL": "/topic-content/topic","ENV_BRANCH": "branch","ERROR_URL": "/error","MAIN_VERSION": "mainVersion","TOPIC_COLLECTION_URL": "/summary","LOGINBOX_URL": "/auth/loginbox","PROCON_DEBATE_TOPICS_URL": "/procon/Debate-Topics","ONE_GOOD_FACT_BROWSE_URL": "/one-good-fact/all-good-facts","QUIZ_BROWSE_URL": "/quiz/browse","BIO_BROWSE_URL": "/browse/biographies","LIST_URL": "/list","TIGHTROPE_QUIZ_URL": "/quiz/tightrope","ALPHA_BROWSE_URL": "/sitemap","CONTENT_TYPE_JSON": "application/json","DICTIONARY_URL": "/dictionary","COBRAND_IMAGE_URL": "/image/cobrand","PROCON_IN_THE_NEWS_URL": "/procon/pro-and-con-issues-in-the-news","PROCON_BROWSE_URL": "/procon","QUIZ_BROWSE_VOCAB_QUIZZES": "vocabulary-quizzes","SUBMISSION_URL": "/submission","EB_LOG_OUT": "/auth2/logout","ENV_PRODUCTION": "production","TOPIC_AJAX_URL": "/ajax/topic","TOPIC_SUMMARY_BROWSE_URL": "/summaries","WTFACT_BROWSE_URL": "/stories/wtfact","EXPLORE_OLD_PORTAL_URL": "/explore-old","VIDEO_CHANNEL_URL": "/videos","GALLERY_BROWSE_URL": "/gallery/browse","CACHE_URL": "/cache","PROCON_ABOUT_URL": "/procon/About-ProCon","COMPANION_BROWSE_URL": "/stories/companion","MEDIA_FOLDER": "/eb-media","SHOW_ALL_CONTRIBUTORS": "/additional-info#contributors","BRITANNICA_EDITORS_ID": "4419","ENV_CACHE_DISABLED": "mendelCache","CALCULATORS_BROWSE_URL": "/calculators","STORY_URL": "/story","DEFAULT_COUNTRY": "US","NAVBAR_URL": "/ajax/navbar","EB_LOGIN_URL": "/auth/eb-login","NEW_ARTICLES_URL": "/new-articles",}; window.CDN = "https://cdn.britannica.com"; window.CAM_SETTINGS_URL = "https://cam.britannica.com/settings"; window.CAM_LOGIN_URL = "https://cam.britannica.com/login"; window.CAM_SIGN_UP_URL = "https://cam.britannica.com/registration" window.Mendel = { "config" : { "domain": "britannica.com", "page": "Topic", "videoPlayerId": "UyMCoK2v", "sharedUrl": "https://www.britannica.com/topic/food", "amuselabsUrl": "https://cdn3.amuselabs.com", "resourcesPrefixUrl": "https://cdn.britannica.com/mendel-resources/3-134/[url]?v=3.134.26", "date": 20250330, "userInfo": { "type": "ANONYMOUS" ,"currency": "AUUS" ,"country": "SG" ,"state": "XX" ,"timezone": "Asia/Singapore" ,"bcomId": "-2689945299874977758" ,"hasAds": true ,"testVersion": "C" ,"adsTestVersion": "C" ,"consumerId": "" ,"instId": "" ,"consumerUserName": "" ,"instUserName": "" ,"cognito": null }, "tvs":{ "r":[25,25,25,25], "a": [25,25,45,5]}, "isLoggedInAsUser": false, "isPhone": false, "isDesktop": true, "logoutUrl": "/auth2/logout", "selfServiceUrl": "https://myaccount.britannica.com", "cdnUrl": "https://cdn.britannica.com", "chatbotApi": "https://www.britannica.com/chat-api", "fetchOffset": 800, "mendelCookieName": "__mendel", "mendelCookie": {"surveyShown":false,"visitedTopicId":212568,"currentDate":20250330}, "autocompleteToSearchPage": false,"topicUrl": "https://www.britannica.com/topic/food", "freeTopicReason": "PERMANENT_FREE_TOPIC", "topicId": 212568, "template": "DESKTOP", "type": "CORE", "hasToc": false, "chatbotApi": "https://www.britannica.com/chat-api", "showPreview": false, }, "GA": {"leg":"C","adLeg":"C","userType":"ANONYMOUS","pageType":"Topic","articleTemplateType":"SMALL","gisted":false,"pageNumber":1,"hasSummarizeButton":false,"hasAskButton":true,"hasAiTopQuestions":false,"hasSimplifyButton":false} }; </script> <meta property="fb:app_id" content="1887621861548296"/> <meta name="twitter:card" content="summary_large_image" /> <meta name="twitter:site" content="@britannica" /> <meta name="twitter:image" content="https://cdn.britannica.com/36/123536-050-95CB0C6E/Variety-fruits-vegetables.jpg" /> <meta name="twitter:description" content="Food, substance consisting of protein, carbohydrate, fat, and other nutrients used in the body of an organism to sustain growth and vital processes and to furnish energy. The absorption and utilization of food by the body is fundamental to nutrition and is facilitated by digestion. Learn more about food."/> <meta property="og:type" content="ARTICLE"/> <meta property="og:title" content="Food | Definition & Nutrition | Britannica"/> <meta property="og:description" content="Food, substance consisting of protein, carbohydrate, fat, and other nutrients used in the body of an organism to sustain growth and vital processes and to furnish energy. The absorption and utilization of food by the body is fundamental to nutrition and is facilitated by digestion. Learn more about food."/> <meta property="og:site_name" content="Encyclopedia Britannica" /> <meta property="og:url" content="https://www.britannica.com/topic/food"/> <meta property="og:image" content="https://cdn.britannica.com/36/123536-050-95CB0C6E/Variety-fruits-vegetables.jpg" /> <meta property="og:image:type" content="image/jpeg" /> <script type="text/javascript" data-type="init opengraph"> Mendel.openGraph = {"type":"ARTICLE","title":"Food | Definition & Nutrition","description":"Food, substance consisting of protein, carbohydrate, fat, and other nutrients used in the body of an organism to sustain growth and vital processes and to furnish energy. The absorption and utilization of food by the body is fundamental to nutrition and is facilitated by digestion. Learn more about food.","imageUrl":"https://cdn.britannica.com/36/123536-050-95CB0C6E/Variety-fruits-vegetables.jpg","imageType":"image/jpeg","pageUrl":"https://www.britannica.com/topic/food"}</script> <link rel="preconnect" href="https://fonts.googleapis.com/"> <link rel="dns-prefetch" href="https://fonts.googleapis.com/" > <link rel="stylesheet" href="https://fonts.googleapis.com/icon?family=Material+Icons"> <link href="https://cdn.britannica.com/mendel-resources/3-134/dist/vendor-bundle.css?v=3.134.26" rel="stylesheet" /> <link href="https://cdn.britannica.com/mendel-resources/3-134/dist/mendel-css.css?v=3.134.26" rel="stylesheet" /> <link href="https://cdn.britannica.com/mendel-resources/3-134/dist/topic-page.css?v=3.134.26" rel="stylesheet" /> <script type="text/javascript"> if (self !== top) { top.location = self.location; } </script> <script src="https://cdn.britannica.com/mendel-resources/3-134/js/at.js?v=3.134.26" async ></script> <script> dataLayer = []; </script> <script type="text/javascript">(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start': new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0], j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src= '//www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f); })(window,document,'script','dataLayer','GTM-5W6NC8'); </script> <meta name="last-modified" content="2025-03-21" /> <script type="application/ld+json"> {"headline":"Food | Definition & Nutrition","image":{"url":"https://cdn.britannica.com/36/123536-050-95CB0C6E/Variety-fruits-vegetables.jpg","@type":"ImageObject"},"author":[{"name":"The Editors of Encyclopaedia Britannica","url":"https://www.britannica.com/editor/The-Editors-of-Encyclopaedia-Britannica/4419","@type":"Person"}],"keywords":"food","wordcount":225,"url":"https://www.britannica.com/topic/food","datePublished":"1998-07-20T00:00:00Z","dateModified":"2025-03-21T00:00:00Z","description":"Food, substance consisting of protein, carbohydrate, fat, and other nutrients used in the body of an organism to sustain growth and vital processes and to furnish energy. The absorption and utilization of food by the body is fundamental to nutrition and is facilitated by digestion. Learn more about food.","publisher":{"name":"Encyclopedia Britannica","@type":"Organization","logo":{"url":"https://corporate.britannica.com/wp-content/themes/eb-corporate/_img/logo.png","@type":"ImageObject"}},"@context":"https://schema.org","@type":"article"} </script> </head> <body data-leg="C" class="new-topic topic-desktop first-page-true user-ANONYMOUS user-ads md-desktop leg-c b-ie">  <script>Mendel.config.adProvider='cafemedia';</script> <script data-no-optimize="1" data-cfasync="false"> (function(w, d) { w.adthrive = w.adthrive || {}; w.adthrive.cmd = w. adthrive.cmd || []; w.adthrive.plugin = 'adthrive-ads-manual'; w.adthrive.host = 'ads.adthrive.com';var s = d.createElement('script'); s.async = true; s.referrerpolicy='no-referrer-when-downgrade'; s.src = 'https://' + w.adthrive.host + '/sites/61575e5c934c481d714b3ca9/ads.min.js?referrer=' + w.encodeURIComponent(w.location.href) + '&cb=' + (Math.floor(Math.random() * 100) + 1); var n = d.getElementsByTagName('script')[0]; n.parentNode.insertBefore(s, n); })(window, document); </script> <div class="ie-warning d-flex align-items-center align-self-center justify-content-center site-alert bg-orange"> <div> You are using an <strong>outdated</strong> browser. Please <a class="text-white text-underscore" href="https://browsehappy.com/">upgrade your browser</a> to improve your experience and security. </div> </div> <script id="json-navbar-info" type="application/json"> {"topSectionLinks":[{"title":"Ask the Chatbot","url":"/chatbot","navbarId":"CHATBOT"},{"title":"Games & Quizzes","url":"/quiz/browse","navbarId":"QUIZZES"},{"title":"History & Society","url":"/History-Society","navbarId":"HISTORY"},{"title":"Science & Tech","url":"/Science-Tech","navbarId":"SCIENCE"},{"title":"Biographies","url":"/Biographies","navbarId":"BIOS"},{"title":"Animals & Nature","url":"/Animals-Nature","navbarId":"ANIMALS"},{"title":"Geography & Travel","url":"/Geography-Travel","navbarId":"GEOGRAPHY"},{"title":"Arts & Culture","url":"/Arts-Culture","selected":true,"navbarId":"ART"},{"title":"ProCon","url":"/procon","navbarId":"PROCON"},{"title":"Money","url":"/money","navbarId":"MONEY"},{"title":"Videos","url":"/videos","navbarId":"VIDEOS"}],"selectedSuperCategory":{"id":2,"title":"Arts & Culture","url":"Arts-Culture","description":"Explore arts and culture; entertainment and pop culture, actors, comics, dance, film, food, music, theatre, tv; visual arts, architecture, fashion, painting, photography, sculpture; literature, fiction, nonfiction, plays, poetry, short story; sports and recreation","keywords":"entertainment and pop culture, actors, comics, dance, film, food, music, theatre, tv; visual arts, architecture, fashion, painting, photography, sculpture; literature, fiction, nonfiction, plays, poetry, short story; sports and recreation","classId":"ART","sortOrder":6},"selectedNavbarLink":{"title":"Arts & Culture","url":"/Arts-Culture","selected":true,"navbarId":"ART"}} </script> <script id="json-hamburger-menu" type="application/json"> {"britannicaMenu1":[{"title":"Home","url":"/"},{"title":"History & Society","url":"/History-Society"},{"title":"Science & Tech","url":"/Science-Tech"},{"title":"Biographies","url":"/Biographies"},{"title":"Animals & Nature","url":"/Animals-Nature"},{"title":"Geography & Travel","url":"/Geography-Travel"},{"title":"Arts & Culture","url":"/Arts-Culture"},{"title":"ProCon","url":"/procon"},{"title":"Money","url":"/money"}],"britannicaMenu2":[{"title":"Games & Quizzes","url":"/quiz/browse"},{"title":"Videos","url":"/videos"},{"title":"On This Day","url":"/on-this-day"},{"title":"One Good Fact","url":"/one-good-fact"},{"title":"Dictionary","url":"/dictionary"},{"title":"New Articles","url":"/new-articles"}],"browseByCategory":[{"title":{"id":5,"title":"History & Society","url":"/History-Society"},"links":[{"title":"Lifestyles & Social Issues","url":"/browse/Lifestyles-Social-Issues"},{"title":"Philosophy & Religion","url":"/browse/Philosophy-Religion"},{"title":"Politics, Law & Government","url":"/browse/Politics-Law-Government"},{"title":"World History","url":"/browse/World-History"}]},{"title":{"id":6,"title":"Science & Tech","url":"/Science-Tech"},"links":[{"title":"Health & Medicine","url":"/browse/Health-Medicine"},{"title":"Science","url":"/browse/Science"},{"title":"Technology","url":"/browse/Technology"}]},{"title":{"id":3,"title":"Biographies","url":"/Biographies"},"links":[{"title":"Browse Biographies","url":"/browse/biographies"}]},{"title":{"id":1,"title":"Animals & Nature","url":"/Animals-Nature"},"links":[{"title":"Birds, Reptiles & Other Vertebrates","url":"/browse/Birds-Reptiles-Vertebrates"},{"title":"Bugs, Mollusks & Other Invertebrates","url":"/browse/Bugs-Mollusks-Invertebrates"},{"title":"Environment","url":"/browse/Environment"},{"title":"Fossils & Geologic Time","url":"/browse/Fossil-Geologic-Time"},{"title":"Mammals","url":"/browse/Mammals"},{"title":"Plants","url":"/browse/Plants"}]},{"title":{"id":4,"title":"Geography & Travel","url":"/Geography-Travel"},"links":[{"title":"Geography & Travel","url":"/browse/Geography-Travel"}]},{"title":{"id":2,"title":"Arts & Culture","url":"/Arts-Culture"},"links":[{"title":"Entertainment & Pop Culture","url":"/browse/Entertainment-Pop-Culture"},{"title":"Literature","url":"/browse/Literature"},{"title":"Sports & Recreation","url":"/browse/Sports-Recreation"},{"title":"Visual Arts","url":"/browse/Visual-Arts"}]}],"browseByFeature":[{"title":"Companions","url":"/stories/companion"},{"title":"Demystified","url":"/stories/demystified"},{"title":"Image Galleries","url":"/gallery/browse"},{"title":"Lists","url":"/list/browse"},{"title":"Podcasts","url":"/podcasts"},{"title":"Spotlight","url":"/stories/spotlight"},{"title":"Summaries","url":"/summary"},{"title":"Top Questions","url":"/question"},{"title":"#WTFact","url":"/stories/wtfact"}],"moreFromBritannica":[{"title":"Britannica Kids","url":"https://kids.britannica.com/","newTab":true}],"menuType":"DEFAULT"} </script> <header id="header" class="bg-navy-dark"> <div class="global-nav-top-bar"> <div class="grid gx-0 h-100 justify-content-between align-items-center container-lg mx-auto p-0 position-relative"> <div class="d-flex align-items-center"> <button class="d-flex align-items-center justify-self-start js-toggle js-toggle-hamburger btn btn-link link-white btn-sm rounded-0 p-10"> <div class="hamburger-tooltip"> <em class="material-icons d-inline-block font-24" id="nav-toggle" data-icon="menu"></em> </div> <em class="material-icons d-inline-block font-24 global-nav-search-icon" id="nav-search-icon" data-icon="search" ></em> </button> <a href="/" class="d-flex align-items-center justify-content-center ml-10"> <img loading="lazy" src="https://cdn.britannica.com/mendel/eb-logo/MendelNewThistleLogo.png" alt="Encyclopedia Britannica" class="global-nav-logo global-nav-logo-left" /> </a> <div class="global-nav-top-search-bar global-nav-top-search-container global-nav-search-container" id="global-nav-top-search-bar"> <form method="get" action="/search" id="global-nav-search" class="md-search-form m-0 global-nav-search-bar-small"> <div class="search-box position-relative col-100"> <label class="sr-only" for="global-nav-search-query">Search Britannica</label> <input name="query" id="global-nav-search-query" placeholder="Search Britannica..." class="form-control form-control-lg rounded-lg font-16 search-query pl-20 pr-70 shadow-sm" maxlength="200" autocomplete="off" aria-label="Search Britannica" /> <button class="search-reset-btn btn btn-link px-10 position-absolute top-0 h-100 d-none" type="reset"> <em class="material-icons" data-icon="close"></em> </button> <button class="search-submit btn btn-link text-blue px-10 position-absolute top-0 right-0 h-100" type="submit" disabled> <span class="sr-only">Click here to search</span> <em class="material-icons search-icon" data-icon="search"></em> </button> </div> </form> </div> </div> <a href="/" class="d-flex align-items-center justify-content-center"> <img loading="lazy" src="https://cdn.britannica.com/mendel/eb-logo/MendelNewThistleLogo.png" alt="Encyclopedia Britannica" class="global-nav-center global-nav-logo non-homepage-logo" /> </a> <form method="get" action="/search" id="global-nav-search" class="md-search-form m-0 global-nav-search-bar-small global-nav-center search global-nav-center-search-container"> <div class="search-box position-relative col-100"> <label class="sr-only" for="global-nav-search-query">Search Britannica</label> <input name="query" id="global-nav-search-query" placeholder="Search Britannica..." class="form-control form-control-lg rounded-lg font-16 search-query pl-20 pr-70 shadow-sm" maxlength="200" autocomplete="off" aria-label="Search Britannica" /> <button class="search-reset-btn btn btn-link px-10 position-absolute top-0 h-100 d-none" type="reset"> <em class="material-icons" data-icon="close"></em> </button> <button class="search-submit btn btn-link text-blue px-10 position-absolute top-0 right-0 h-100" type="submit" disabled> <span class="sr-only">Click here to search</span> <em class="material-icons search-icon" data-icon="search"></em> </button> </div> </form> <div class="col-35 col-sm-auto text-right order-3 mr-lg-15 align-items-center d-flex justify-content-end"> <div class="d-none d-md-inline-block"> <SPAN class="marketing-HEADER_SUBSCRIPTION_DESKTOP2 marketing-content" data-marketing-id="HEADER_SUBSCRIPTION_DESKTOP2"><a href="https://premium.britannica.com/premium-membership/?utm_source=premium&utm_medium=global-nav&utm_campaign=evergreen-cap" class="subscribe-link btn btn-sm btn-orange py-5 mr-10" target="_blank" rel="noopener"> SUBSCRIBE </a></SPAN></div> <div class="d-inline-block d-md-none mr-5 mr-sm-10"> <SPAN class="marketing-HEADER_SUBSCRIPTION_MOBILE marketing-content" data-marketing-id="HEADER_SUBSCRIPTION_MOBILE"><a href="https://premium.britannica.com/premium-membership/?utm_source=premium&utm_medium=global-nav-mobile&utm_campaign=evergreen" class="subscribe-link btn btn-xs btn-orange p-5" target="_blank" rel="noopener"> SUBSCRIBE </a></SPAN></div> <button class="js-toggle-user-dropdown js-toggle btn btn-sm btn-link link-white rounded-0 px-md-15 pl-5 pr-5"> <span class="d-none d-md-inline-block mr-5">Login</span> <em class="material-icons d-inline-block d-md-none font-16 font-sm-20" data-icon="account_circle"></em> <div class="d-none dropdown-menu-subscription-link">https://premium.britannica.com/premium-membership/?utm_source=premium&utm_medium=nav-login-box&utm_campaign=evergreen</div> <em class="material-icons inactive-icon d-inline-block font-18" data-icon="keyboard_arrow_down"></em> <em class="material-icons active-icon d-inline-block font-18" data-icon="keyboard_arrow_up"></em> </button> </div> </div> </div> <div class="d-none hamburger-menu-subscription-link"><DIV class="marketing-HAMBURGER_MENU_CTA marketing-content" data-marketing-id="HAMBURGER_MENU_CTA"><a href="https://premium.britannica.com/premium-membership/?utm_source=premium&utm_medium=hamburger-menu&utm_campaign=evergreen" class="subscribe-link btn btn-sm btn-orange py-5" target="_blank"> SUBSCRIBE </a></DIV></div> <div id="global-nav-react"> <div class="d-none"> <ul> <li><a href="/">Home</a></li> <li><a href="/History-Society">History & Society</a></li> <li><a href="/Science-Tech">Science & Tech</a></li> <li><a href="/Biographies">Biographies</a></li> <li><a href="/Animals-Nature">Animals & Nature</a></li> <li><a href="/Geography-Travel">Geography & Travel</a></li> <li><a href="/Arts-Culture">Arts & Culture</a></li> <li><a href="/procon">ProCon</a></li> <li><a href="/money">Money</a></li> </ul> <ul> <li><a href="/quiz/browse">Games & Quizzes</a></li> <li><a href="/videos">Videos</a></li> <li><a href="/on-this-day">On This Day</a></li> <li><a href="/one-good-fact">One Good Fact</a></li> <li><a href="/dictionary">Dictionary</a></li> <li><a href="/new-articles">New Articles</a></li> </ul> <a href="/History-Society">History & Society</a> <ul> <li><a href="/browse/Lifestyles-Social-Issues">Lifestyles & Social Issues</a></li> <li><a href="/browse/Philosophy-Religion">Philosophy & Religion</a></li> <li><a href="/browse/Politics-Law-Government">Politics, Law & Government</a></li> <li><a href="/browse/World-History">World History</a></li> </ul> <a href="/Science-Tech">Science & Tech</a> <ul> <li><a href="/browse/Health-Medicine">Health & Medicine</a></li> <li><a href="/browse/Science">Science</a></li> <li><a href="/browse/Technology">Technology</a></li> </ul> <a href="/Biographies">Biographies</a> <ul> <li><a href="/browse/biographies">Browse Biographies</a></li> </ul> <a href="/Animals-Nature">Animals & Nature</a> <ul> <li><a href="/browse/Birds-Reptiles-Vertebrates">Birds, Reptiles & Other Vertebrates</a></li> <li><a href="/browse/Bugs-Mollusks-Invertebrates">Bugs, Mollusks & Other Invertebrates</a></li> <li><a href="/browse/Environment">Environment</a></li> <li><a href="/browse/Fossil-Geologic-Time">Fossils & Geologic Time</a></li> <li><a href="/browse/Mammals">Mammals</a></li> <li><a href="/browse/Plants">Plants</a></li> </ul> <a href="/Geography-Travel">Geography & Travel</a> <ul> <li><a href="/browse/Geography-Travel">Geography & Travel</a></li> </ul> <a href="/Arts-Culture">Arts & Culture</a> <ul> <li><a href="/browse/Entertainment-Pop-Culture">Entertainment & Pop Culture</a></li> <li><a href="/browse/Literature">Literature</a></li> <li><a href="/browse/Sports-Recreation">Sports & Recreation</a></li> <li><a href="/browse/Visual-Arts">Visual Arts</a></li> </ul> <ul> <li><a href="/stories/companion">Companions</a></li> <li><a href="/stories/demystified">Demystified</a></li> <li><a href="/gallery/browse">Image Galleries</a></li> <li><a href="/list/browse">Lists</a></li> <li><a href="/podcasts">Podcasts</a></li> <li><a href="/stories/spotlight">Spotlight</a></li> <li><a href="/summary">Summaries</a></li> <li><a href="/question">Top Questions</a></li> <li><a href="/stories/wtfact">#WTFact</a></li> </ul> <ul> <li><a href="https://kids.britannica.com/">Britannica Kids</a></li> </ul> </div> </div> </header> <div class="bg-navy-dark"> <div class="container-lg p-0 d-flex justify-content-center global-nav-categories-bar overflow-hidden"> <div class="slider js-slider position-relative d-inline-flex align-items-center mw-100 global-nav-slider category-snap-slider"> <div class="slider-container js-slider-container overflow-hidden d-flex font-14 overflow-hidden text-nowrap mx-5"> <a class="nav-bar-category mx-5 category-link-CHATBOT " href="/chatbot">Ask the Chatbot</a> <a class="nav-bar-category mx-5 category-link-QUIZZES " href="/quiz/browse">Games & Quizzes</a> <a class="nav-bar-category mx-5 category-link-HISTORY " href="/History-Society">History & Society</a> <a class="nav-bar-category mx-5 category-link-SCIENCE " href="/Science-Tech">Science & Tech</a> <a class="nav-bar-category mx-5 category-link-BIOS " href="/Biographies">Biographies</a> <a class="nav-bar-category mx-5 category-link-ANIMALS " href="/Animals-Nature">Animals & Nature</a> <a class="nav-bar-category mx-5 category-link-GEOGRAPHY " href="/Geography-Travel">Geography & Travel</a> <a class="nav-bar-category mx-5 category-link-ART selected selected" href="/Arts-Culture">Arts & Culture</a> <a class="nav-bar-category mx-5 category-link-PROCON " href="/procon">ProCon</a> <a class="nav-bar-category mx-5 category-link-MONEY " href="/money">Money</a> <a class="nav-bar-category mx-5 category-link-VIDEOS " href="/videos">Videos</a> </div> <button disabled class="prev-button js-prev-button position-absolute btn btn-circle shadow btn-blue " aria-label="Previous"> <span class="material-icons md-24" data-icon="keyboard_arrow_left"></span> </button> <button disabled class="next-button js-next-button position-absolute btn btn-circle shadow btn-blue " aria-label="Next"> <span class="material-icons md-24" data-icon="keyboard_arrow_right"></span> </button> </div> </div> </div> <main> <div class="md-page-wrapper"> <div id="content" class="md-content"> <div class="md-article-container template-desktop"> <div class="infinite-scroll-container article last"> <script> Object.assign( window.Mendel.config, { "infiniteScrollList": [{"p":1,"t":212568},{"p":1,"t":2231617},{"p":1,"t":2100133},{"p":7,"t":422875},{"p":1,"t":212731},{"p":2,"t":226766},{"p":1,"t":1803217},{"p":31,"t":9647},{"p":13,"t":422896},{"p":10,"t":212684}], "sequence": 1, "topics": {} }); </script> <article class="article-content container-lg qa-content px-0 pt-0 pb-40 py-lg-20 content " data-topic-id="212568"> <div class="grid gx-0"> <div class="col-auto"> <div class="topic-left-rail md-article-drawer position-relative d-flex border-right-sm border-left-sm open"> <div class="drawer d-flex flex-column open"> <div class="left-rail-section-content"> <div class="topic-left-rail-header text-truncate bg-gray-50 position-relative text-right d-flex align-items-center"> <div class="tlr-title px-20 py-15 text-left"> <em class="material-icons text-gray-400 d-lg-none" data-icon="toc"></em> <a class="font-serif font-weight-bold text-black link-blue" href="https://www.britannica.com/topic/food">food</a> </div> <button aria-label="Close" class="js-sections-close-button btn-link btn-sm btn d-lg-none position-absolute top-0 p-10 right-0" > <em class="material-icons font-26" data-icon="close"></em> </button> </div> <div class="section-content pl-10 pr-20 pl-sm-50 pr-sm-60 pl-lg-5 pr-lg-10 pt-10 pt-lg-0 bg-gray-50 clear-catfish-ad"> <div class="toc mb-20"> <div class="font-serif font-14 font-weight-bold mx-15 mb-15 mt-20"> Table of Contents </div> <span class="toc-extra-link selected link-gray-900 mt-15"> Introduction </span> <a class="toc-extra-link link-gray-900" href="https://www.britannica.com/topic/food/additional-info">References & Edit History</a> <a class="toc-extra-link link-gray-900" href="/facts/food">Quick Facts & Related Topics</a> </div> <div class="tlr-media-slider pb-10 mb-30"> <a class="section-header link-gray-900 font-serif font-14 font-weight-bold mb-10 mx-10" href="https://www.britannica.com/topic/food/images-videos">Images & Videos</a> <div class="slider js-slider position-relative d-inline-flex align-items-center mw-100 "> <div class="slider-container js-slider-container overflow-hidden d-flex overflow-hidden text-nowrap ml-15"> <a href="https://cdn.britannica.com/36/123536-050-95CB0C6E/Variety-fruits-vegetables.jpg" data-href="/media/1/212568/117092" class="media-overlay-link d-inline-block mr-5"> <img loading="lazy" src="https://cdn.britannica.com/36/123536-004-F36B44E4/Variety-fruits-vegetables.jpg" alt="food" height="50" /> </a> <a href="/video/do-different-parts-of-the-tongue-taste-different-flavors-video/308643" data-href="/media/1/212568/308643" class="media-overlay-link d-inline-block mr-5"> <div class="position-relative --aspect-ratio: 16/9"> <img loading="lazy" src="https://cdn.britannica.com/05/258405-138-D094CF5E/do-different-parts-of-the-tongue-taste-different-flavors-video.jpg?w=400&h=225&c=crop" alt="Do different parts of the tongue taste different flavors?" class="col-100" /> <div class="btn btn-sm btn-white btn-circle position-absolute shadow" style="top: 50%; left:50%; transform: translate(-50%, -50%)"> <em class="material-icons font-14" data-icon="play_arrow" > </em> </div> </div> </a> <a href="/video/Can-I-Still-Eat-This-expiration-dates/279168" data-href="/media/1/212568/279168" class="media-overlay-link d-inline-block mr-5"> <div class="position-relative --aspect-ratio: 16/9"> <img loading="lazy" src="https://cdn.britannica.com/81/240881-138-11AE4B2E/Can-I-Still-Eat-This-expiration-dates.jpg?w=400&h=225&c=crop" alt="How to tell if food is still safe to eat" class="col-100" /> <div class="btn btn-sm btn-white btn-circle position-absolute shadow" style="top: 50%; left:50%; transform: translate(-50%, -50%)"> <em class="material-icons font-14" data-icon="play_arrow" > </em> </div> </div> </a> <a href="/video/chemistry-cotton-candy-making/207498" data-href="/media/1/212568/207498" class="media-overlay-link d-inline-block mr-5"> <div class="position-relative --aspect-ratio: 16/9"> <img loading="lazy" src="https://cdn.britannica.com/77/186977-138-A84533B7/chemistry-cotton-candy-making.jpg?w=400&h=225&c=crop" alt="Know how the heating elements of the cotton candy machine acts upon the granulated sugar and converts it into cotton candy" class="col-100" /> <div class="btn btn-sm btn-white btn-circle position-absolute shadow" style="top: 50%; left:50%; transform: translate(-50%, -50%)"> <em class="material-icons font-14" data-icon="play_arrow" > </em> </div> </div> </a> <a href="/video/overview-food-preservation/206259" data-href="/media/1/212568/206259" class="media-overlay-link d-inline-block mr-5"> <div class="position-relative --aspect-ratio: 16/9"> <img loading="lazy" src="https://cdn.britannica.com/69/186469-138-7761DB14/overview-food-preservation.jpg?w=400&h=225&c=crop" alt="Learn about food preservation and the various methods to preserve foodstuffs" class="col-100" /> <div class="btn btn-sm btn-white btn-circle position-absolute shadow" style="top: 50%; left:50%; transform: translate(-50%, -50%)"> <em class="material-icons font-14" data-icon="play_arrow" > </em> </div> </div> </a> <a href="/video/process-problem-Clarence-Birdseye-part-food-preservation/203960" data-href="/media/1/212568/203960" class="media-overlay-link d-inline-block mr-5"> <div class="position-relative --aspect-ratio: 16/9"> <img loading="lazy" src="https://cdn.britannica.com/12/185612-138-9759FE16/process-problem-Clarence-Birdseye-part-food-preservation.jpg?w=400&h=225&c=crop" alt="Know about freezing food for preservation, and Clarence Birdseye industrial method of freezing food by pressing" class="col-100" /> <div class="btn btn-sm btn-white btn-circle position-absolute shadow" style="top: 50%; left:50%; transform: translate(-50%, -50%)"> <em class="material-icons font-14" data-icon="play_arrow" > </em> </div> </div> </a> <a href="/video/tags-research-food-packaging-spoilage-containers-colour/207531" data-href="/media/1/212568/207531" class="media-overlay-link d-inline-block mr-5"> <div class="position-relative --aspect-ratio: 16/9"> <img loading="lazy" src="https://cdn.britannica.com/81/186981-138-11878392/tags-research-food-packaging-spoilage-containers-colour.jpg?w=400&h=225&c=crop" alt="How smart tags can indicate food spoilage" class="col-100" /> <div class="btn btn-sm btn-white btn-circle position-absolute shadow" style="top: 50%; left:50%; transform: translate(-50%, -50%)"> <em class="material-icons font-14" data-icon="play_arrow" > </em> </div> </div> </a> <a href="/video/Nutritious-foods-healthy-balanced-diet/244329" data-href="/media/1/212568/244329" class="media-overlay-link d-inline-block mr-5"> <div class="position-relative --aspect-ratio: 16/9"> <img loading="lazy" src="https://cdn.britannica.com/34/212834-138-DB24302D/Nutritious-foods-healthy-balanced-diet.jpg?w=400&h=225&c=crop" alt="The basics of a balanced diet" class="col-100" /> <div class="btn btn-sm btn-white btn-circle position-absolute shadow" style="top: 50%; left:50%; transform: translate(-50%, -50%)"> <em class="material-icons font-14" data-icon="play_arrow" > </em> </div> </div> </a> <a href="/video/Overview-tapas/191927" data-href="/media/1/212568/191927" class="media-overlay-link d-inline-block mr-5"> <div class="position-relative --aspect-ratio: 16/9"> <img loading="lazy" src="https://cdn.britannica.com/99/179899-138-2E5D71CF/Overview-tapas.jpg?w=400&h=225&c=crop" alt="The art of making Spanish tapas" class="col-100" /> <div class="btn btn-sm btn-white btn-circle position-absolute shadow" style="top: 50%; left:50%; transform: translate(-50%, -50%)"> <em class="material-icons font-14" data-icon="play_arrow" > </em> </div> </div> </a> <a href="/video/Saint-Patrick-discussion-foods-contemporaries-Ireland/200757" data-href="/media/1/212568/200757" class="media-overlay-link d-inline-block mr-5"> <div class="position-relative --aspect-ratio: 16/9"> <img loading="lazy" src="https://cdn.britannica.com/91/183291-138-8333D6BB/Saint-Patrick-discussion-foods-contemporaries-Ireland.jpg?w=400&h=225&c=crop" alt="View a demonstration of early and medieval Irish foods possibly eaten by Saint Patrick and his contemporaries" class="col-100" /> <div class="btn btn-sm btn-white btn-circle position-absolute shadow" style="top: 50%; left:50%; transform: translate(-50%, -50%)"> <em class="material-icons font-14" data-icon="play_arrow" > </em> </div> </div> </a> </div> <button disabled class="prev-button js-prev-button position-absolute btn btn-circle shadow btn-blue " aria-label="Previous"> <span class="material-icons md-24" data-icon="keyboard_arrow_left"></span> </button> <button disabled class="next-button js-next-button position-absolute btn btn-circle shadow btn-blue " aria-label="Next"> <span class="material-icons md-24" data-icon="keyboard_arrow_right"></span> </button> </div> </div> <div class="mb-30 tlr-related-quizzes"> <div class="text-gray-900 p-5 font-serif font-14 font-weight-bold mx-10 mb-10"> Quizzes </div> <div class="imagelink-with-image-on-the-side card card-horizontal tlr-img-with-side-link ml-15 link-gray-900 mb-10" > <div class="position-relative card-media" style="flex: 0;"> <a class="ilf-image position-relative" href="/quiz/a-world-of-food"> <img loading="lazy" src="https://cdn.britannica.com/88/234288-131-32C7F29B/Ceviche-Cuisine-food.jpg?w=200&h=200&c=crop" alt="Ceviche. Peruvian ceviche (sebiche). Raw seafood dish with lime, cilantro, peppers, plantains. Cuisine, food" width="200" height="200" /> </a> </div> <div class="card-body ilf-content"> <a class="font-weight-semi-bold d-block mb-5 font-16 ilf-title" href="/quiz/a-world-of-food" >A World of Food Quiz</a> </div> </div> <div class="imagelink-with-image-on-the-side card card-horizontal tlr-img-with-side-link ml-15 link-gray-900 mb-10" > <div class="position-relative card-media" style="flex: 0;"> <a class="ilf-image position-relative" href="/quiz/baking-and-baked-goods"> <img loading="lazy" src="https://cdn.britannica.com/79/143279-131-AD0E874F/Slices-lemon-pie-meringue.jpg?w=200&h=200&c=crop" alt="Slices of lemon pie topped with meringue." width="200" height="200" /> </a> </div> <div class="card-body ilf-content"> <a class="font-weight-semi-bold d-block mb-5 font-16 ilf-title" href="/quiz/baking-and-baked-goods" >Baking and Baked Goods Quiz</a> </div> </div> <div class="imagelink-with-image-on-the-side card card-horizontal tlr-img-with-side-link ml-15 link-gray-900 mb-10" > <div class="position-relative card-media" style="flex: 0;"> <a class="ilf-image position-relative" href="/quiz/whats-on-the-menu-vocabulary-quiz"> <img loading="lazy" src="https://cdn.britannica.com/57/233857-131-6EDF46A6/Chef-tossing-vegetables-frying-pan.jpg?w=200&h=200&c=crop" alt="Chef tossing vegetables in a frying pan over a burner (skillet, food)." width="200" height="200" /> </a> </div> <div class="card-body ilf-content"> <a class="font-weight-semi-bold d-block mb-5 font-16 ilf-title" href="/quiz/whats-on-the-menu-vocabulary-quiz" >What’s on the Menu? Vocabulary Quiz</a> </div> </div> <div class="imagelink-with-image-on-the-side card card-horizontal tlr-img-with-side-link ml-15 link-gray-900 mb-10" > <div class="position-relative card-media" style="flex: 0;"> <a class="ilf-image position-relative" href="/quiz/fruit-or-vegetable-a-quiz"> <img loading="lazy" src="https://cdn.britannica.com/35/245035-131-0C09D257/red-and-yellow-cherry-tomatoes.jpg?w=200&h=200&c=crop" alt="Red and yellow cherry tomatoes, some forming a question mark, against a light blue background. (organic, fruits, vegetables)" width="200" height="200" /> </a> </div> <div class="card-body ilf-content"> <a class="font-weight-semi-bold d-block mb-5 font-16 ilf-title" href="/quiz/fruit-or-vegetable-a-quiz" >Fruit or Vegetable? A Quiz</a> </div> </div> <div class="imagelink-with-image-on-the-side card card-horizontal tlr-img-with-side-link ml-15 link-gray-900 mb-10" > <div class="position-relative card-media" style="flex: 0;"> <a class="ilf-image position-relative" href="/quiz/ultimate-foodie-quiz"> <img loading="lazy" src="https://cdn.britannica.com/77/155477-131-A6AFC4F2/Grains-spices-bags-India.jpg?w=200&h=200&c=crop" alt="Grains and spices in bags, India. (Indian, vendor, market, food)" width="200" height="200" /> </a> </div> <div class="card-body ilf-content"> <a class="font-weight-semi-bold d-block mb-5 font-16 ilf-title" href="/quiz/ultimate-foodie-quiz" >Ultimate Foodie Quiz</a> </div> </div> </div> <div class="mb-30 tlr-related-questions"> <div class="text-gray-900 p-5 pb-0 font-serif font-14 font-weight-bold mx-10 mb-15"> Related Questions </div> <ul> <li class="link-gray-900 mb-15"><a class="" href="/question/What-is-the-definition-of-famine">What is the definition of famine?</a> </li> <li class="link-gray-900 mb-15"><a class="" href="/question/What-are-the-causes-of-famine">What are the causes of famine?</a> </li> </ul> </div> <div class="mb-30 tlr-read-next"> <div class="text-gray-900 p-5 font-serif font-14 font-weight-bold mx-10 mb-10"> Read Next </div> <div class="imagelink-with-image-on-the-side card card-horizontal tlr-img-with-side-link ml-15 link-gray-900 mb-10" > <div class="position-relative card-media" style="flex: 0;"> <a class="ilf-image position-relative" href="/story/why-do-some-foods-explode-in-the-microwave"> <img loading="lazy" src="https://cdn.britannica.com/60/195360-131-CC0FDF43/microwave-kitchen.jpg?w=200&h=200&c=crop" alt="microwave, kitchen" width="200" height="200" /> </a> </div> <div class="card-body ilf-content"> <a class="font-weight-semi-bold d-block mb-5 font-16 ilf-title" href="/story/why-do-some-foods-explode-in-the-microwave" >Why Do Some Foods Explode in the Microwave?</a> </div> </div> <div class="imagelink-with-image-on-the-side card card-horizontal tlr-img-with-side-link ml-15 link-gray-900 mb-10" > <div class="position-relative card-media" style="flex: 0;"> <a class="ilf-image position-relative" href="/story/why-is-pizza-so-popular-in-the-us"> <img loading="lazy" src="https://cdn.britannica.com/08/177308-131-DFD947AD/Food-Pizza-Basil-Tomato.jpg?w=200&h=200&c=crop" alt="Food. Pizza. Basil. Tomato." width="200" height="200" /> </a> </div> <div class="card-body ilf-content"> <a class="font-weight-semi-bold d-block mb-5 font-16 ilf-title" href="/story/why-is-pizza-so-popular-in-the-us" >Why Is Pizza So Popular in the U.S.?</a> </div> </div> <div class="imagelink-with-image-on-the-side card card-horizontal tlr-img-with-side-link ml-15 link-gray-900 mb-10" > <div class="position-relative card-media" style="flex: 0;"> <a class="ilf-image position-relative" href="/story/some-like-it-hot-9-soups-from-around-the-world"> <img loading="lazy" src="https://cdn.britannica.com/66/190766-131-DAD28938/Moroccan-soup.jpg?w=200&h=200&c=crop" alt="Harira Moroccan soup" width="200" height="200" /> </a> </div> <div class="card-body ilf-content"> <a class="font-weight-semi-bold d-block mb-5 font-16 ilf-title" href="/story/some-like-it-hot-9-soups-from-around-the-world" >Some Like It Hot: 9 Soups from Around the World</a> </div> </div> <div class="imagelink-with-image-on-the-side card card-horizontal tlr-img-with-side-link ml-15 link-gray-900 mb-10" > <div class="position-relative card-media" style="flex: 0;"> <a class="ilf-image position-relative" href="/list/8-foods-that-pack-a-nutritional-punch"> <img loading="lazy" src="https://cdn.britannica.com/74/181374-131-F77D8DCC/kale-leaves.jpg?w=200&h=200&c=crop" alt="curly kale. Kale or borecole (Brassica oleracea Acephala Group) a loose leafed, edible plant derived from the cabbage. vegetable" width="200" height="200" /> </a> </div> <div class="card-body ilf-content"> <a class="font-weight-semi-bold d-block mb-5 font-16 ilf-title" href="/list/8-foods-that-pack-a-nutritional-punch" >Nutritional Powerhouses: 8 Foods That Pack a Nutritional Punch</a> </div> </div> <div class="imagelink-with-image-on-the-side card card-horizontal tlr-img-with-side-link ml-15 link-gray-900 mb-10" > <div class="position-relative card-media" style="flex: 0;"> <a class="ilf-image position-relative" href="/story/10-incredible-uses-for-eggs"> <img loading="lazy" src="https://cdn.britannica.com/37/173237-131-E42C6B15/egg-white-contents-yolk.jpg?w=200&h=200&c=crop" alt="A broken egg shows its contents, an egg yolk and egg white." width="200" height="200" /> </a> </div> <div class="card-body ilf-content"> <a class="font-weight-semi-bold d-block mb-5 font-16 ilf-title" href="/story/10-incredible-uses-for-eggs" >10 Incredible Uses for Eggs</a> </div> </div> </div> <div class="mb-30 tlr-discover"> <div class="text-gray-900 p-5 font-serif font-14 font-weight-bold mx-10 mb-10"> Discover </div> <div class="imagelink-with-image-on-the-side card card-horizontal tlr-img-with-side-link ml-15 link-gray-900 mb-10" > <div class="position-relative card-media" style="flex: 0;"> <a class="ilf-image position-relative" href="/list/22-questions-about-time-and-timekeeping-answered"> <img loading="lazy" src="https://cdn.britannica.com/10/189610-131-C06C6A6B/Calendar-march-15th-march-15th.jpg?w=200&h=200&c=crop" alt="Calendar marking march 15th" width="200" height="200" /> </a> </div> <div class="card-body ilf-content"> <a class="font-weight-semi-bold d-block mb-5 font-16 ilf-title" href="/list/22-questions-about-time-and-timekeeping-answered" >22 Questions About Time and Timekeeping Answered</a> </div> </div> <div class="imagelink-with-image-on-the-side card card-horizontal tlr-img-with-side-link ml-15 link-gray-900 mb-10" > <div class="position-relative card-media" style="flex: 0;"> <a class="ilf-image position-relative" href="/list/new-seven-wonders-of-the-world"> <img loading="lazy" src="https://cdn.britannica.com/36/162636-131-E4AA93A0/Colosseum-Rome-Italy.jpg?w=200&h=200&c=crop" alt="The Colosseum, Rome, Italy. Giant amphitheatre built in Rome under the Flavian emperors. (ancient architecture; architectural ruins)" width="200" height="200" /> </a> </div> <div class="card-body ilf-content"> <a class="font-weight-semi-bold d-block mb-5 font-16 ilf-title" href="/list/new-seven-wonders-of-the-world" >New Seven Wonders of the World</a> </div> </div> <div class="imagelink-with-image-on-the-side card card-horizontal tlr-img-with-side-link ml-15 link-gray-900 mb-10" > <div class="position-relative card-media" style="flex: 0;"> <a class="ilf-image position-relative" href="/story/whats-inside-the-great-pyramid"> <img loading="lazy" src="https://cdn.britannica.com/74/194374-131-40F15D56/pyramid-sunset-egypt.jpg?w=200&h=200&c=crop" alt="pyramid sunset, egypt" width="200" height="200" /> </a> </div> <div class="card-body ilf-content"> <a class="font-weight-semi-bold d-block mb-5 font-16 ilf-title" href="/story/whats-inside-the-great-pyramid" >What’s Inside the Great Pyramid?</a> </div> </div> <div class="imagelink-with-image-on-the-side card card-horizontal tlr-img-with-side-link ml-15 link-gray-900 mb-10" > <div class="position-relative card-media" style="flex: 0;"> <a class="ilf-image position-relative" href="/list/12-greek-gods-and-goddesses"> <img loading="lazy" src="https://cdn.britannica.com/23/176123-131-94DCF6F8/Aphrodite.jpg?w=200&h=200&c=crop" alt="Aphrodite. Greek mythology. Sculpture. Aphrodite is the Greek goddess of love and beauty." width="200" height="200" /> </a> </div> <div class="card-body ilf-content"> <a class="font-weight-semi-bold d-block mb-5 font-16 ilf-title" href="/list/12-greek-gods-and-goddesses" >12 Greek Gods and Goddesses</a> </div> </div> <div class="imagelink-with-image-on-the-side card card-horizontal tlr-img-with-side-link ml-15 link-gray-900 mb-10" > <div class="position-relative card-media" style="flex: 0;"> <a class="ilf-image position-relative" href="/story/5-of-the-worlds-most-devastating-financial-crises"> <img loading="lazy" src="https://cdn.britannica.com/25/187725-131-7F3B1ADC/men-line-food-Chicago-Great-Depression-Illinois.jpg?w=200&h=200&c=crop" alt="The Great Depression Unemployed men queued outside a soup kitchen opened in Chicago by Al Capone The storefront sign reads 'Free Soup" width="200" height="200" /> </a> </div> <div class="card-body ilf-content"> <a class="font-weight-semi-bold d-block mb-5 font-16 ilf-title" href="/story/5-of-the-worlds-most-devastating-financial-crises" >5 of the World’s Most Devastating Financial Crises</a> </div> </div> <div class="imagelink-with-image-on-the-side card card-horizontal tlr-img-with-side-link ml-15 link-gray-900 mb-10" > <div class="position-relative card-media" style="flex: 0;"> <a class="ilf-image position-relative" href="/story/what-is-an-aftershock"> <img loading="lazy" src="https://cdn.britannica.com/43/186043-131-27B127B5/earthquake-Rescue-team-victims-debris-aftermath-Van-October-23-2011.jpg?w=200&h=200&c=crop" alt="VAN, TURKEY - OCTOBER 25: A building and car ruined during the earthquake of Van-Ercis on October 25, 2011 in Van, Turkey. It is 604 killed and 4152 injured in Van-Ercis Earthquake." width="200" height="200" /> </a> </div> <div class="card-body ilf-content"> <a class="font-weight-semi-bold d-block mb-5 font-16 ilf-title" href="/story/what-is-an-aftershock" >What Is an Aftershock?</a> </div> </div> <div class="imagelink-with-image-on-the-side card card-horizontal tlr-img-with-side-link ml-15 link-gray-900 mb-10" > <div class="position-relative card-media" style="flex: 0;"> <a class="ilf-image position-relative" href="/story/what-darwin-got-right-and-wrong-about-evolution"> <img loading="lazy" src="https://cdn.britannica.com/30/19630-131-2FBE042A/Charles-Darwin-photograph-Julia-Margaret-Cameron-1868.jpg?w=200&h=200&c=crop" alt="Charles Darwin, carbon print photograph by Julia Margaret Cameron, 1868." width="200" height="200" /> </a> </div> <div class="card-body ilf-content"> <a class="font-weight-semi-bold d-block mb-5 font-16 ilf-title" href="/story/what-darwin-got-right-and-wrong-about-evolution" >What Darwin Got Right (and Wrong) About Evolution</a> </div> </div> </div> </div> </div> </div> <button class="drawerToggle btn position-sticky border btn-xs btn-white btn-circle rounded-sm d-none d-lg-flex " type="button" aria-label="Toggle Drawer"> <em class="material-icons font-18 text-blue" data-icon="keyboard_arrow_left"></em> </button> </div> </div> <div class="col"> <div class="h-100 ml-0 pr-lg-0 "> <div class="h-100 grid gx-0 gx-lg-20"> <div class="h-100 col-sm"> <div class="h-100 infinite-pagination-container d-flex flex-column position-relative"> <div class="position-absolute top-0 h-100 w-100"> <div class="toc-sticky-header d-none d-lg-none bg-gray-50 px-10 px-sm-30 position-sticky w-100 "> <div class="toc-sticky-header-inner-container align-items-center d-flex mx-auto h-100 w-100"> <button class="d-flex d-lg-none btn btn-sm btn-white text-blue border-2 border-gray-100 gtm-mobile-toc-header-button js-sections-button d-lg-none p-10"> <em class="material-icons my-n5 md-icon" data-icon="toc"></em> Contents </button> <div class="header-ai-simplify-button-placeholder"></div> <div class="header-ai-ask-button-placeholder"></div> </div> </div> </div> <div class="grey-box w-100 grey-box-top grey-box-bottom"> <div class="grey-box-content mx-auto w-100"> <script type="application/ld+json"> { "@context" : "https://schema.org", "@type" : "BreadcrumbList", "itemListElement" : [ { "@type" : "ListItem", "position" : 1, "item" : { "@id" : "https://www.britannica.com/browse/Entertainment-Pop-Culture", "name": "Entertainment & Pop Culture" } } , { "@type" : "ListItem", "position" : 2, "item" : { "@id" : "https://www.britannica.com/browse/Food", "name": "Food" } } ] } </script> <nav class="breadcrumb mt-20"> <span class="breadcrumb-item "> <a class="link-gray-600" href="/browse/Entertainment-Pop-Culture">Entertainment & Pop Culture</a> </span> <span class="breadcrumb-item "> <a class="link-gray-600" href="/browse/Food">Food</a> </span> </nav> <div class="page2ref-true topic-content topic-type-REGULAR" data-student-article="true"> <script class="page-description-json" type="application/json"> { "url": "/topic/food", "shareUrl": "https://www.britannica.com/topic/food", "browserTitle": "Food | Definition & Nutrition", "firstTopicPage": true, "topicId":212568 } </script> <div class="reading-channel"> <div class="desktop-header-image module-spacing"> <figure class="md-assembly m-0 mb-20 mb-md-0 card card-borderless print-false" data-assembly-id="13684" data-asm-type="image"> <div class="md-assembly-wrapper card-media " data-type="image"> <a style="min-height: 160px;" href="https://cdn.britannica.com/36/123536-050-95CB0C6E/Variety-fruits-vegetables.jpg" class="gtm-assembly-link position-relative d-flex align-items-center justify-content-center media-overlay-link card-media" data-href="/media/1/212568/117092"> <picture> <source media="(min-width: 680px)" srcset="https://cdn.britannica.com/36/123536-050-95CB0C6E/Variety-fruits-vegetables.jpg?w=300"> <img src="https://cdn.britannica.com/36/123536-050-95CB0C6E/Variety-fruits-vegetables.jpg?w=400&h=300&c=crop" alt="food" loading="eager" /> </picture> <button class="magnifying-glass btn btn-circle position-absolute shadow btn-white top-10 right-10" aria-label="Zoom in"> <em class="material-icons link-blue" data-icon="zoom_in"></em> </button> </a> </div> <figcaption class="card-body"> <div class="md-assembly-caption text-muted font-14 font-serif line-clamp"> <span> <a class="gtm-assembly-link md-assembly-title font-weight-bold d-inline font-sans-serif mr-5 media-overlay-link" href="https://cdn.britannica.com/36/123536-050-95CB0C6E/Variety-fruits-vegetables.jpg" data-href="/media/1/212568/117092">food</a> <span><span>Variety of fruits and vegetables.</span></span> <button class="js-more-btn d-none btn btn-unstyled font-12 bg-white js-content" aria-label="Toggle more/less fact data"> <span class="link-blue">(more)</span> </button> </span> </div> </figcaption> </figure> </div><div class="topic-header"> <div class="d-flex align-items-top justify-content-between"> <div class="d-flex flex-column"> <div> <div> <h1>food</h1></div> </div> </div> </div> <div class="d-none d-sm-flex flex-row"> <div class="mr-10 mb-15"> <button class="ai-ask-button btn btn-sm border-2 btn-outline-red-400 border-red-400 btn-sm btn-outline-red-400 border-red-400 px-sm-5 px-md-10 js-inline-ai-ask-button"> Ask the Chatbot a Question </button> </div> <div class="d-block md-topic-tools qa-action-buttons mb-15" data-topic-id="212568"> <button class="js-tooltip btn btn-sm btn-outline-blue border pr-10 border-2 text-nowrap" > <em class="material-icons md-icon ml-n10 my-n5 mr-5" data-icon="more_vert"></em> More Actions </button> <div class="md-more-popover popover popover-sm p-0 font-14 z-1"> <div> <a class="js-modal btn btn-sm btn-link gtm-topic-tool font-weight-bold btn-link" href="/print/article/212568" target="_blank" > <em class="material-icons mr-5 ml-n10 my-n5 md-icon" data-icon="print"></em> Print </a> </div> <div> <button class="js-modal qa-cite-modal-button btn btn-sm btn-link gtm-topic-tool font-weight-bold btn-link" data-modal="[data-topic-id=212568] .md-cite-modal"> <em class="material-icons mr-5 ml-n10 my-n5 md-icon" data-icon="verified"></em> Cite </button> <div class="md-cite-modal size-lg d-none"> <div class="md-modal-body"> <div class="h2 font-serif d-flex align-items-center pb-15 border-bottom mb-15"> <em class="material-icons text-blue mr-10">verified</em>Cite </div> <div class="font-serif"> While every effort has been made to follow citation style rules, there may be some discrepancies. Please refer to the appropriate style manual or other sources if you have any questions. </div> <div class="label mt-20 mb-10">Select Citation Style</div> <select class="js-citation-format-select form-select"> <option selected value="mla">MLA</option> <option value="apa">APA</option> <option value="chicago">Chicago Manual of Style</option> </select> <div class="citation font-serif border rounded p-15 mt-20" data-authors="The Editors of Encyclopaedia Britannica" data-authors-initial="The Editors of Encyclopaedia Britannica" data-title="food" data-published-date="21 Mar. 2025" data-url="https://www.britannica.com/topic/food" > <div class="citation-text"></div> </div> <button class="js-copy-citation-button mt-20 btn btn-xs btn-outline-blue border shadow-sm pr-10" > <em class="material-icons md-icon ml-n10 my-n5 mr-5" data-icon="file_copy"></em> <span class="js-citation-status-text">Copy Citation</span> </button> </div> </div> </div> <div> <button class="js-share-modal-button js-modal btn btn-sm btn-link gtm-topic-tool font-weight-bold btn-link" data-modal="[data-topic-id=212568] .md-share-modal"> <em class="material-icons mr-5 ml-n10 my-n5 md-icon" data-icon="share"></em> Share </button> <div class="md-share-modal size-lg d-none qa-share-modal"> <div class="md-modal-body"> <div class="h2 font-serif d-flex align-items-center pb-15 border-bottom"> <em class="material-icons text-blue mr-10" data-icon="share"></em> Share </div> <div class="label my-20">Share to social media</div> <div class="md-social-toolbar-circle d-flex align-items-start inverted" data-value="share" title="food" data-url="https://www.britannica.com/topic/food" > <a class="social-icon facebook justify-content-center d-flex align-items-center align-self-center" data-provider="facebook" href="https://www.facebook.com/BRITANNICA/" target="_blank" rel="noopener"><span>Facebook</span></a> <a class="social-icon x justify-content-center d-flex align-items-center align-self-center" data-provider="x" href="https://x.com/britannica" target="_blank" rel="noopener"><span>X</span></a> </div> <div class="label pt-20 mt-20 mb-5 border-top">URL</div> <a class="font-serif text-truncate d-inline-block" href="https://www.britannica.com/topic/food">https://www.britannica.com/topic/food</a> </div> </div> </div> <div> <button class="js-feedback-modal-button js-modal btn btn-sm btn-link gtm-topic-tool font-weight-bold btn-link" data-modal=".md-feedback-modal"> <em class="material-icons mr-5 ml-n10 my-n5 md-icon" data-icon="message"></em> Feedback </button> </div> <div> <button class="qa-external-website-modal-button js-modal btn btn-sm btn-link gtm-topic-tool font-weight-bold btn-link" data-modal="[data-topic-id=212568] .md-websites-modal"> <em class="material-icons md-icon ml-n10 mr-5" data-icon="link"></em> External Websites </button> </div> </div> <div class="md-feedback-modal size-lg d-none"> <div class="md-modal-body"> <div class="h2 font-serif pb-15 border-bottom"> Feedback </div> <form method="post" action="/submission/feedback/212568"> <div class="my-20"> Corrections? Updates? Omissions? Let us know if you have suggestions to improve this article (requires login). </div> <div class="type-menu"> <label for="feedback-type" class="label mb-10">Feedback Type</label> <select id="feedback-type" class="form-select mb-30" name="feedbackTypeId" required> <option value="" selected="selected">Select a type (Required)</option> <option value="1">Factual Correction</option> <option value="2">Spelling/Grammar Correction</option> <option value="3">Link Correction</option> <option value="4">Additional Information</option> <option value="5">Other</option> </select> </div> <label for="feedback" class="label mb-10">Your Feedback</label> <textarea id="feedback" class="form-control mb-30" name="feedback" maxlength="3000" rows="7" required></textarea> <button class="btn btn-blue" type="submit">Submit Feedback</button> </form> <div class="success-messaging d-none mt-30"> <div class="title">Thank you for your feedback</div> <p>Our editors will review what you’ve submitted and determine whether to revise the article.</p> </div> </div> </div> <div class="md-websites-modal size-lg d-none"> <div class="md-modal-body"> <div class="h2 font-serif pb-15 border-bottom font-weight-bold"> External Websites </div> <div class="pb-20"> <ul class="list-unstyled mt-20 lh-lg"> <li><a class="external" href="https://dentistry.uic.edu/news-stories/the-best-foods-for-a-healthy-smile-and-whole-body/" target="_blank" rel="noopener ">University of Illinois Chicago - The Best Foods For A Healthy Smile and Whole Body</a></li> <li><a class="external" href="https://chem.libretexts.org/Bookshelves/Introductory_Chemistry/Chemistry_for_Changing_Times_(Hill_and_McCreary)/17%3A_Food" target="_blank" rel="noopener ">Chemistry LibreTexts - Food</a></li> <li><a class="external" href="https://www.ijaar.org/articles/Volume5-Number11/Sciences-Technology-Engineering/ijaar-ste-v5n11-nov19-p16.pdf" target="_blank" rel="noopener ">International Journal of Advanced Academic Research - The Functional Properties of Foods and Flours</a></li> <li><a class="external" href="https://www.ncbi.nlm.nih.gov/books/NBK235023/" target="_blank" rel="noopener ">National Center for Biotechnology Information - The Food We Eat</a></li> <li><a class="external" href="https://citeseerx.ist.psu.edu/document?repid=rep1&type=pdf&doi=fdfeedd405dcbe102570b573d2d1b9ce247fb21e" target="_blank" rel="noopener ">CiteSeerX - Food: what a surprise! (PDF)</a></li> <li><a class="external" href="https://www.fao.org/4/a0104e/a0104e06.htm" target="_blank" rel="noopener ">Food and Agriculture Organization of the United Nations - The function of Food</a></li> <li><a class="external" href="https://www.healthline.com/nutrition/50-super-healthy-foods" target="_blank" rel="noopener ">Healthline - A list of 50 Super Healthy Foods</a></li> </ul> </div> </div> </div> </div> </div> <div class="toc-header-marker"></div> <button class="ai-ask-button btn btn-sm border-2 btn-outline-red-400 border-red-400 d-none mr-0 mr-lg-10 ml-5 ml-sm-10 ml-lg-0 p-10 px-sm-5 px-md-10 js-header-ai-ask-button"> Ask the Chatbot a Question </button> <div class="caption alternate-titles">Also known as: nourishment</div> <div class="md-byline module-spacing "> <div class="font-serif font-12"> <span class="written-by text-gray-700"> Written and fact-checked by </span> <div class="editor-popover popover p-0"> <a class="d-block p-20 qa-editor-popup gtm-byline font-12 byline-contributor" href="/editor/The-Editors-of-Encyclopaedia-Britannica/4419" > <div class="editor-title font-16 font-weight-bold">The Editors of Encyclopaedia Britannica</div> <div class="editor-description font-12 font-serif mt-5 text-black">Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree. They write new content and verify and edit content received from contributors.</div> </a> <div data-popper-arrow></div> </div> <span class="btn btn-link editor-link p-0 qa-byline-link gtm-byline font-12 byline-contributor text-decoration-underline"> The Editors of Encyclopaedia Britannica</span></div> <div class="last-updated font-12 font-serif"> <span class="text-gray-700"> Last Updated: <time datetime="2025-03-21T00:00:00CDT" >Mar 21, 2025</time> •</span> <a class="byline-edit-history" href="https://www.britannica.com/topic/food/additional-info#history" rel="nofollow">Article History</a> </div></div> </div> <button class="d-flex d-lg-none btn btn-outline-blue border rounded-sm shadow-sm mobile-toc-button gtm-mobile-toc-inline-button d-none d-sm-block js-sections-inline-button module-spacing btn d-lg-none"> <em class="material-icons mr-5 ml-n10 my-n5 md-icon" data-icon="toc"></em> Table of Contents </button> <div class="d-flex d-sm-none flex-row"> <button class="d-flex d-lg-none btn btn-outline-blue border rounded-sm shadow-sm mobile-toc-button gtm-mobile-toc-inline-button js-sections-inline-button module-spacing"> <em class="material-icons mr-5 ml-n10 my-n5 md-icon" data-icon="toc"></em> Table of Contents </button> <button class="ai-ask-button btn btn-sm border-2 btn-outline-red-400 border-red-400 module-spacing js-inline-ai-ask-button p-10 ml-5"> Ask the Chatbot </button> </div> <div class="js-qf-module qf-module px-40 px-sm-20 py-15 mx-auto module-spacing font-14 bg-gray-50 rounded"> <div class="facts-list mt-10"> <div class=""> <div class="js-fact mb-10 line-clamp clamp-3"> <dl> <dt>Key People: </dt> <dd><a href="/biography/M-F-K-Fisher" topicid="208650">M.F.K. Fisher</a></dd> </dl> <button class="js-more-btn d-none btn btn-unstyled font-12 bg-gray-50" aria-label="Toggle more/less fact data"> <em class="js-content link-blue">(Show more)</em> </button> </div> </div> <div class=""> <div class="js-fact mb-10 line-clamp clamp-3"> <dl> <dt>Related Topics: </dt> <dd><a href="/topic/agriculture" topicid="9647">origins of agriculture</a></dd> <dd><a href="/topic/dairy-product" topicid="149947">dairy product</a></dd> <dd><a href="/topic/cooking" topicid="136114">cooking</a></dd> <dd><a href="/topic/fat" topicid="202365">fat</a></dd> <dd><a href="/science/famine" topicid="201392">famine</a></dd> </dl> <button class="js-more-btn d-none btn btn-unstyled font-12 bg-gray-50" aria-label="Toggle more/less fact data"> <em class="js-content link-blue">(Show more)</em> </button> </div> </div> <div class=""> <div class="js-fact mb-10 line-clamp clamp-3"> <dl> <dt>On the Web: </dt> <dd><a href="https://citeseerx.ist.psu.edu/document?repid=rep1&type=pdf&doi=fdfeedd405dcbe102570b573d2d1b9ce247fb21e" target="_blank">CiteSeerX - Food: what a surprise! (PDF)</a> (Mar. 21, 2025)</dd> </dl> <button class="js-more-btn d-none btn btn-unstyled font-12 bg-gray-50" aria-label="Toggle more/less fact data"> <em class="js-content link-blue">(Show more)</em> </button> </div> <div class="text-center"> <a class="btn btn-sm btn-link p-0" href="/facts/food"> See all related content </a> </div> </div> </div> </div><span class="marker before-article"></span><section data-level="1" id="ref1"><span class="marker PREMOD1 mod-inline"></span><p class="topic-paragraph"><strong><span id="ref262526"></span>food</strong>, <a href="https://www.britannica.com/topic/substance-philosophy" class="md-crosslink " data-show-preview="true">substance</a> consisting essentially of <a href="https://www.britannica.com/science/protein" class="md-crosslink " data-show-preview="true">protein</a>, <a href="https://www.britannica.com/science/carbohydrate" class="md-crosslink " data-show-preview="true">carbohydrate</a>, <a href="https://www.britannica.com/topic/fat" class="md-crosslink " data-show-preview="true">fat</a>, and other <a href="https://www.britannica.com/science/nutrient" class="md-crosslink " data-show-preview="true">nutrients</a> used in the body of an <a href="https://www.britannica.com/science/multicellular-organism" class="md-crosslink " data-show-preview="true">organism</a> to sustain <a href="https://www.britannica.com/science/growth-biology" class="md-crosslink " data-show-preview="true">growth</a> and vital processes and to furnish <a href="https://www.britannica.com/science/energy" class="md-crosslink " data-show-preview="true">energy</a>. The absorption and utilization of food by the body is fundamental to nutrition and is <a class="md-dictionary-link md-dictionary-tt-off mw" data-term="facilitated" href="https://www.merriam-webster.com/dictionary/facilitated" data-type="MW">facilitated</a> by <a href="https://www.britannica.com/science/digestion-biology" class="md-crosslink " data-show-preview="true">digestion</a>. <a href="https://www.britannica.com/plant/plant" class="md-crosslink " data-show-preview="true">Plants</a>, which convert <a href="https://www.britannica.com/science/solar-energy" class="md-crosslink " data-show-preview="true">solar energy</a> to food by <a href="https://www.britannica.com/science/photosynthesis" class="md-crosslink " data-show-preview="true">photosynthesis</a>, are the primary food source. <a href="https://www.britannica.com/animal/animal" class="md-crosslink " data-show-preview="true">Animals</a> that <a href="https://www.britannica.com/topic/feed-agriculture" class="md-crosslink autoxref " data-show-preview="true">feed</a> on <a href="https://www.britannica.com/plant/plant" class="md-crosslink " data-show-preview="true">plants</a> often serve as sources of food for other animals. To learn more about the sequence of transfers of matter and energy in the form of food from organism to organism, <em>see</em> <a href="https://www.britannica.com/science/food-chain" class="md-crosslink " data-show-preview="true">food chain</a>.</p><span class="marker MOD1 mod-inline"></span><span class="marker PREMOD2 mod-inline"></span><div class="assemblies"><div class="w-100 assembly-container"><figure class="md-assembly m-0 mb-md-0 card card-borderless print-false" data-assembly-id="308643" data-asm-type="video"><div class="md-assembly-wrapper card-media" data-type="video" video-id="258405"><a data-id="258405" class="gtm-assembly-link d-flex justify-content-center" style="--aspect-ratio: 16/9" href="/video/do-different-parts-of-the-tongue-taste-different-flavors-video/-308643"><img src="https://cdn.britannica.com/05/258405-138-D094CF5E/do-different-parts-of-the-tongue-taste-different-flavors-video.jpg?w=800&h=450&c=crop" alt="Do different parts of the tongue taste different flavors?" loading="lazy"><script type="application/json"> { "sources": [ { "file" : "//content.jwplatform.com/manifests/tEhrSddX.m3u8" } ], "image": "https://cdn.britannica.com/05/258405-138-D094CF5E/do-different-parts-of-the-tongue-taste-different-flavors-video.jpg" ,"tracks": [ { "file" : "//assets-jpcust.jwpsrv.com/tracks/7mMjT3WB.vtt", "label": "English" } ] ,"adfile": "//content.jwplatform.com/manifests/kjoIi1oY.m3u8" } </script><div class="btn btn-xl btn-white btn-circle position-absolute shadow" style="top: 50%; transform: translateY(-50%)"><em class="material-icons" data-icon="play_arrow"></em></div></a></div><figcaption class="card-body"><div class="md-assembly-caption text-muted font-14 font-serif line-clamp"><span><span class="md-assembly-title font-weight-bold mr-5 d-inline font-sans-serif md-video-caption" video-control="258405">Do different parts of the tongue taste different flavors?</span><span>The “tongue map” locates taste receptors for sweet, salty, bitter, and sour flavors on different parts of the tongue.</span><button class="js-more-btn d-none btn btn-unstyled font-12 bg-white js-content" aria-label="Toggle more/less fact data"><span class="link-blue">(more)</span></button></span></div><a class="font-14 mt-10 d-inline-block" href="/topic/food/images-videos">See all videos for this article</a></figcaption></figure></div></div><p class="topic-paragraph">Hunting and gathering, <a href="https://www.britannica.com/science/horticulture" class="md-crosslink " data-show-preview="true">horticulture</a>, pastoralism, and the development of <a href="https://www.britannica.com/topic/agriculture" class="md-crosslink " data-show-preview="true">agriculture</a> are the primary means by which humans have adapted to their <a class="md-dictionary-link md-dictionary-tt-off mw" data-term="environments" href="https://www.merriam-webster.com/dictionary/environments" data-type="MW">environments</a> to feed themselves. Food has long served as a carrier of <a href="https://www.britannica.com/topic/culture" class="md-crosslink " data-show-preview="true">culture</a> in <a href="https://www.britannica.com/topic/human-being" class="md-crosslink autoxref " data-show-preview="true">human</a> societies and has been a driving force for <a href="https://www.britannica.com/science/cultural-globalization" class="md-crosslink " data-show-preview="true">globalization</a>. This was especially the case during the early phases of European trade and colonial expansion, when foods such as the hot red <a href="https://www.britannica.com/plant/pepper-plant-Capsicum-genus" class="md-crosslink " data-show-preview="true">pepper</a>, <a href="https://www.britannica.com/plant/corn-plant" class="md-crosslink " data-show-preview="true">corn</a> (maize), and <a href="https://www.britannica.com/plant/sweet-potato" class="md-crosslink " data-show-preview="true">sweet potatoes</a> spread throughout <a href="https://www.britannica.com/place/Europe" class="md-crosslink autoxref " data-show-preview="true">Europe</a> to Africa and Asia.</p><div class="one-good-fact-module"> </div><span class="marker MOD2 mod-inline"></span><span class="marker PREMOD3 mod-inline"></span><div class="assemblies"><div class="w-100 assembly-container"><figure class="md-assembly m-0 mb-md-0 card card-borderless print-false" data-assembly-id="279168" data-asm-type="video"><div class="md-assembly-wrapper card-media" data-type="video" video-id="240881"><a data-id="240881" class="gtm-assembly-link d-flex justify-content-center" style="--aspect-ratio: 16/9" href="/video/Can-I-Still-Eat-This-expiration-dates/-279168"><img src="https://cdn.britannica.com/81/240881-138-11AE4B2E/Can-I-Still-Eat-This-expiration-dates.jpg?w=800&h=450&c=crop" alt="How to tell if food is still safe to eat" loading="lazy"><script type="application/json"> { "sources": [ { "file" : "//content.jwplatform.com/manifests/VtYSocP6.m3u8" } ], "image": "https://cdn.britannica.com/81/240881-138-11AE4B2E/Can-I-Still-Eat-This-expiration-dates.jpg" ,"tracks": [ { "file" : "//assets-jpcust.jwpsrv.com/tracks/1mjTCbxF", "label": "English" } ] ,"adfile": "//content.jwplatform.com/manifests/8v2dje0E.m3u8" } </script><div class="btn btn-xl btn-white btn-circle position-absolute shadow" style="top: 50%; transform: translateY(-50%)"><em class="material-icons" data-icon="play_arrow"></em></div></a></div><figcaption class="card-body"><div class="md-assembly-caption text-muted font-14 font-serif line-clamp"><span><span class="md-assembly-title font-weight-bold mr-5 d-inline font-sans-serif md-video-caption" video-control="240881">How to tell if food is still safe to eat</span><span>How to read expiration dates on food packaging.</span><button class="js-more-btn d-none btn btn-unstyled font-12 bg-white js-content" aria-label="Toggle more/less fact data"><span class="link-blue">(more)</span></button></span></div><a class="font-14 mt-10 d-inline-block" href="/topic/food/images-videos">See all videos for this article</a></figcaption></figure></div></div><p class="topic-paragraph">Food is treated in a number of articles. For a description of the processes of absorption and utilization of food, <em>see</em> <a href="https://www.britannica.com/science/nutrition" class="md-crosslink " data-show-preview="true">nutrition</a>; <a href="https://www.britannica.com/science/human-nutrition" class="md-crosslink " data-show-preview="true">nutrition, human</a>; <a href="https://www.britannica.com/science/digestion-biology" class="md-crosslink " data-show-preview="true">digestion</a>; and <a href="https://www.britannica.com/science/human-digestive-system" class="md-crosslink " data-show-preview="true">digestive system, human</a>. For information on the methods used to prepare raw foods for <a href="https://www.britannica.com/topic/cooking" class="md-crosslink autoxref " data-show-preview="true">cooking</a>, <a class="md-dictionary-link md-dictionary-tt-off mw" data-term="consumption" href="https://www.merriam-webster.com/dictionary/consumption" data-type="MW">consumption</a>, or storage, <em>see</em> <a href="https://www.britannica.com/topic/food-preservation" class="md-crosslink " data-show-preview="true">food preservation</a>.</p><a class="link-module shadow-sm d-block qa-quiz-module" href="/quiz/whats-on-the-menu-vocabulary-quiz" data-link-module-iframe-link=""> <img loading="lazy" src="https://cdn.britannica.com/57/233857-131-6EDF46A6/Chef-tossing-vegetables-frying-pan.jpg" alt="Chef tossing vegetables in a frying pan over a burner (skillet, food)." class="rounded-sm mr-15" width="70" /> <div class="line-clamp clamp-5"> <div class="module-title bg-green">Britannica Quiz</div> <div class="font-weight-semi-bold mt-5">What’s on the Menu? Vocabulary Quiz</div> </div> </a><span class="marker MOD3 mod-inline"></span></section> <span class="md-signature font-12"><a href="/editor/The-Editors-of-Encyclopaedia-Britannica/4419">The Editors of Encyclopaedia Britannica</a></span><span class="md-signature font-12">This article was most recently revised and updated by <a href="/editor/Meg-Matthias/12593612">Meg Matthias</a>.</span><span class="marker end-of-content"></span><span class="marker after-article"></span></div> <div id="chatbot-simplify-root"></div> <div id="chatbot-root"></div> </div> </div> </div> <div class="ai-dialog-placeholder"></div> </div> </div> <aside class="col-md-da-320"></aside> </div> </div> </div> </div> </article> </div> </div> </div> </div> </main> <div id="md-footer"></div> <noscript><iframe src="//www.googletagmanager.com/ns.html?id=GTM-5W6NC8" height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>  <script> window.ap3c = window.ap3c || {}; var ap3c = window.ap3c; ap3c.cmd = ap3c.cmd || []; ap3c.cmd.push(function() { ap3c.init('ZO4siT4cLwnykPnzZWJtd3Byb2Q', 'https://engage.email.britannica.com/'); ap3c.track({v: 0}); }); ap3c.activity = function(act) { ap3c.act = (ap3c.act || []); ap3c.act.push(act); }; var s, t; s = document.createElement('script'); s.type = 'text/javascript'; s.src = "https://engage.email.britannica.com/app.js"; t = document.getElementsByTagName('script')[0]; t.parentNode.insertBefore(s, t); </script> <script class="marketing-page-info" type="application/json"> {"pageType":"Topic","templateName":"DESKTOP","pageNumber":1,"pagesTotal":1,"pageId":212568,"pageLength":225,"initialLoad":true,"lastPageOfScroll":false} </script> <script class="marketing-content-info" type="application/json"> [] </script> <script src="https://cdn.britannica.com/mendel-resources/3-134/js/libs/jquery-3.5.0.min.js?v=3.134.26"></script> <script type="text/javascript" data-type="Init Mendel Code Splitting"> (function() { $.ajax({ dataType: 'script', cache: true, url: 'https://cdn.britannica.com/mendel-resources/3-134/dist/topic-page.js?v=3.134.26' }); })(); </script> <script class="analytics-metadata" type="application/json"> {"leg":"C","adLeg":"C","userType":"ANONYMOUS","pageType":"Topic","pageSubtype":null,"articleTemplateType":"SMALL","gisted":false,"pageNumber":1,"hasSummarizeButton":false,"hasAskButton":true,"hasAiTopQuestions":false,"hasSimplifyButton":false} </script> <script type="text/javascript"> EBStat={accountId:-1,hostnameOverride:'webstats.eb.com',domain:'www.britannica.com', json:''}; </script> <script type="text/javascript"> ( function() { $.ajax( { dataType: 'script', cache: true, url: '//www.britannica.com/webstats/mendelstats.js?v=1' } ) .done( function() { try {writeStat(null,EBStat);} catch(err){} } ); })(); </script> <div id="bc-fixed-dialogue"></div> </body> </html>

CINXE.COM

Food | Definition & Nutrition | Britannica