In order to prevent the casserole from overflowing when stewing soup, a part of the soup can be scooped out with a spoon or a chopstick can be placed horizontally on the casserole. The principle of putting chopsticks is to destroy the surface tension when the soup overflows. When the soup overflows, the tension on the upper surface of the spilled soup will be reduced because it suddenly hits the chopsticks, thus falling back into the pot.

When the newly bought casserole is used for the first time, it is best to cook porridge, or use it to cook concentrated rice washing water to block the tiny pores of the casserole to prevent water seepage. When using casserole to make soup and stew meat, you should first put water into the casserole, then put the casserole on the fire, first with slow fire, then with strong fire.