2. Cooking quick-frozen zongzi does not need to be thawed, just put it in cold water, and then fully heat it. If you cook zongzi in cold water, it will be heated slowly, so it is not easy for it to be cooked externally and endogenous. Therefore, it is recommended to start cooking zongzi in cold water, and if you cook it in cold water, the taste of zongzi will be better; Moreover, the quick-frozen zongzi has just been taken out of the refrigerator, and it is easy to be boiled in hot water directly, and the taste is not good. According to life experience, it is usually cooked with cold water, and then slowly boiled. The quick-frozen zongzi is generally easy to cook, and it is almost cooked after half an hour.