1. By observing the surface color, you can judge whether the glutinous rice balls are cooked or not. The surface of cooked jiaozi is not pure white, but beige. If there is a powdery substance on the surface, and it is pure white, it means that jiaozi is not cooked. Or, you can put it in the pot with chopsticks and press. If it is hard, it is undercooked.

2. Tangyuan will not sink into the pot after it is cooked. Most jiaozi will float on the water when cooked. This is the best case to distinguish.

3. When the outside of the glutinous rice balls becomes slightly transparent. In addition, it feels very elastic, indicating that jiaozi is ripe. When cooking jiaozi, avoid sticking to the pan. Sticking to the bottom of the pot will be sticky and difficult to clean.