酸种

酸种	suān zhǒng	sourdough starter
酸	suān	sour / tart / sick at heart / grieved / sore / aching / pedantic / impractical / to make sarcastic remarks about sb / an acid
种	zhǒng	seed / species / kind / type / classifier for types, kinds, sorts
种	zhòng	to plant / to grow / to cultivate