yeasty
yeas-ty
adjective
Having the smell, taste, or characteristics of yeast; undergoing fermentation.
"The warm kitchen had a distinct yeasty smell."
adjective
Figuratively, full of restless energy, liveliness, or intellectual ferment.
"Her yeasty mind was always generating new concepts."
Thesaurus
Synonyms: spirited, barmy, zestful, zesty, creative, originative, yeastlike