ferment,
work cause to undergo fermentation; "We ferment the grapes for a very long time to achieve high alcohol content"; "The vintner worked the wine in big oak vats"
change state,
turn undergo a transformation or a change of position or action; "We turned from Socialism to Capitalism"; "The people turned against the President when he stole the election"
Adjective
sour -
having a sharp biting taste
sweet pleasing to the senses; "the sweet song of the lark"; "the sweet face of a child"
dry practicing complete abstinence from alcoholic beverages; "he's been dry for ten years"; "no thank you; I happen to be teetotal"
tasty pleasing to the sense of taste; "a tasty morsel"
acerb,
acerbic,
astringent harsh or corrosive in tone; "an acerbic tone piercing otherwise flowery prose"; "a barrage of acid comments"; "her acrid remarks make her many enemies"; "bitter words"; "blistering criticism"; "caustic jokes about political assassination, talk-show hosts and medical ethics"; "a sulfurous denunciation"; "a vitriolic critique"
sour -
one of the four basic taste sensations; like the taste of vinegar or lemons
tasty pleasing to the sense of taste; "a tasty morsel"
Sour -
showing a brooding ill humor; "a dark scowl"; "the proverbially dour New England Puritan"; "a glum, hopeless shrug"; "he sat in moody silence"; "a morose and unsociable manner"; "a saturnine, almost misanthropic young genius"- Bruce Bliven; "a sour temper"; "a sullen crowd"