Redberry wine

Among sour, sweet, bitter, and spicy wines for the fusion, sour comes from redberry wine. Fang Yuan wills two Liquor worms into the redberry wine jar; they begin fusion inside that wine and a white ball of light forms there. He feeds the jar with primeval stones until the light shrinks to fist size, and the redberry wine is completely used up before he pours the next wine. ^{ch. 121}