Stewing is a common cooking technique. After washing, soaking, boiling water and other simple treatments, it is put into a container, added with soup or water and seasonings, boiled with high fire, and then boiled with low fire for a long time. There are two ways to stew, one is to stew without water, and the other is to stew without water.

Waterproof stewing method is to put the ingredients and soup into a porcelain or ceramic stewing pot, seal the mouth of the stewing pot, and then put the stewing pot into a pot filled with appropriate amount of water. The water in the pot is slightly lower than the mouth of the stew pot, and the lid is covered. After heating, the water in the pot should be kept boiling. It usually takes about three hours to stew in boiling water. This stewing method can keep the original flavor of the ingredients because the ingredients are well sealed in the cooking process, the temperature and pressure in the pot will be kept at a certain level, and fresh and fragrant substances such as protein are easy to dissolve out, and the aroma is less divergent. There is also because the ingredients can't roll in the narrow space of the stew, and the soup is clear, which is especially suitable for clear soup stew.

Waterproof steaming is to put a sealed raw material bowl on a boiling steamer, and the effect is basically the same as waterproof stewing. However, due to the high temperature of stewing, it is necessary to master the steaming time. Insufficient steaming time will make the raw materials immature, less fragrant and less delicious; Steaming for too long will also make the raw materials too ripe, losing flavor and taste. Steamed fish and other typical dishes.