1. If the filling in the quick-frozen jiaozi is meat, it should be cooked for at least 20 minutes. If the jiaozi is full of vegetables, it will take about 10 minutes.

2. Whether the quick-frozen jiaozi is cooked or not can be seen. We can open the lid to see if the dumpling skin has turned pale yellow, and the uncooked jiaozi is pure white flour. Almost all jiaozi only needs to be boiled or steamed for 20 minutes. Jiaozi is easy to cook for a long time, but jiaozi is not cooked for a short time. Therefore, we must pay attention to the time and temperature when steaming and freezing jiaozi, and try our best to keep jiaozi delicious.