The belly is a famous snack in old Beijing. Liang Shiqiu said in the "Yashe talk" that the belly is a sheep belly, the sheep in the mouth is fat and big, and the sheep stomach has several parts: loose Dan, gourd The belly plate, the belly collar, the belly collar is the thickest. The belly belly sold in the restaurant is limited to the belly collar, and it is peeled, so it is called the belly. There are three ways to explode the belly. : Salt explosion, oil explosion, soup explosion."