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differentforcesthatruletheirbehavior.But
scientistsalwayssimplifyrealityinorderto
understandit,andwecandothesame.Foods
aremostlybuiltoutofjustfourkindsof
molecules—water,proteins,carbohydrates,
andfats.Andtheirbehaviorcanbeprettywell
describedwithafewsimpleprinciples.Ifyou
knowthatheatisamanifestationofthe
movementsofmolecules,andthatsufficiently
energeticcollisionsdisruptthestructuresof
moleculesandeventuallybreakthemapart,
thenyou’reveryclosetounderstandingwhy
heatsolidifieseggsandmakesfoodstastier.
Mostreaderstodayhaveatleastavague
ideaofproteinsandfats,moleculesand
energy,andavagueideaisenoughtofollow
mostoftheexplanationsinthefirst13
chapters,whichcovercommonfoodsand
waysofpreparingthem.Chapters14and15
thendescribeinsomedetailthemolecules
andbasicchemicalprocessesinvolvedinall
cooking;andtheAppendixgivesabrief
refreshercourseinthebasicvocabularyof
science.Youcanrefertothesefinalsections
occasionally,toclarifythemeaningofpHor
proteincoagulationasyou’rereadingabout
cheeseormeatorbread,orelsereadthrough
themontheirowntogetageneral
introductiontothescienceofcooking.