2. jiaozi is a traditional food in ancient China, formerly known as jiaoer, and its ingredients include dough and meat stuffing. There are various cooking methods in jiaozi, including boiling, frying, frying, roasting and roasting. Jiaozi is rich in stuffing, including meat stuffing and vegetarian stuffing. Meat jiaozi includes pork, green onions, beef and radish, while vegetarian jiaozi includes leeks, eggs and Chinese cabbage vermicelli.