Tangbao, a special snack of Han nationality. As early as the northern song dynasty, it was sold in the market, and it was called grouting steamed bread or soup filling bag at that time. Famous producing areas are Kaifeng, Xi 'an and other places. The method of crab soup bag is very simple. As long as you follow the recipe step by step, you are sure to enjoy delicious dishes. Crab soup bag is one of the staple food recipes of cakes, with crab roe as the main ingredient. Tang Bao is a famous snack in Hubei Province, which began in Ming Dynasty. At first, Jiangsu chefs went to Wuhan to manage Yangzhou steamed buns, but the stuffing was too sweet for Hubei people's taste. Later, Tian Yushan, a famous chef in Hubei, used frozen skin to adjust the stuffing, and the steamed buns made were mainly salty and slightly sweet, and the business was particularly prosperous. The crab soup bag is made of fermented dough wrapped with meat stuffing, and the jelly is kneaded into the mouth shape of crucian carp and steamed in a small cage. Tangyuan is white in color, thin in skin and tender in filling, and the soup has little greasy feeling. It is very popular in Jiangnan area and spreads widely.