“Wang Shuyou” dripping vinegar is a traditional special product of the ancient town of Banpu. Its founder, Wang Yiyu (about 1633-about 1714), originally from Huizhou (now Anhui County), moved to the Dapu Lane in Banpu in the early years of Qing Emperor Kangxi; at first, he built a workshop at home, and *熬 "Old Sugar" sold for life; After the change to use sorghum to brew vinegar. He is smart and capable and ingenious. Carefully drilled the vinegar formula, constantly improve the operation process, and quickly explore a whole set of technology and experience, so that the vinegar quality is getting better and better. The vinegar color produced by his family is clear and turbid, and the acidity is not too boring. Every time it is eaten, only a few drops are delicious, the mellow is long and the flavor is unique, so people call it “drip vinegar”.