In fact, there are many tips when cooking dumplings. If you master these tips, the dumplings will be more delicious. First of all, when cooking dumplings, you can pinch the pot slightly to make the skin of the dumplings crack, so that the boiled dumplings are not iron, but the heat is boiling with a strong fire, and the simmer is slow, making them slowly churn. In addition, order some cold water after boiling, and repeat it two or three times after boiling.