When cooking zongzi, you must pay attention to the heat. Cooking with big fire and cooking with small fire will have different tastes. Generally, it is recommended to boil with high fire first, then slowly cook with low fire, and then cook with low fire for about one to two hours after boiling. According to the actual situation, this can ensure that the zongzi is completely cooked, and the cooked zongzi is soft, waxy and sweet, with rich fragrance and sufficient moisture. The heating speed of the fire is relatively fast, but it is easy to have a rice sandwich. If the fire is cooked slowly, the cooked rice will taste softer. But if it's not raw zongzi, then it's not necessary to use this method whether it's a big fire or a small fire. The heating speed of large fire is faster, while the cooking speed of small fire is slower but the taste is softer, so you can cook according to your own needs.