2. The time to cook jiaozi depends on whether it is vegetarian jiaozi or meat jiaozi. For vegetarian jiaozi, it takes about 10 minutes to cook jiaozi. Jiaozi needs to be cooked for 15 minutes. Secondly, in the process of cooking jiaozi, cold water needs to be added three times respectively, and finally all jiaozi floats on the water, which means that jiaozi has been cooked, and it is ready to eat jiaozi.