First, when the newly bought casserole is used for the first time, it is best to clean it with a soft brush, and then clean it with clear water to remove particles on the surface. Be careful not to scrub with cleaning balls or hard paper steel wires, which will damage the glaze.

Secondly, due to the production process of casserole, casserole itself often has some earthy smell. This kind of pot, when used for the first time, had better get rid of the peculiar smell. After brushing the sand, put some tea and boil it for more than ten minutes, then pour it out and rinse it with water. White vinegar is acceptable if there is no tea.

Thirdly, not every product in the casserole is complete in the production process, and there are usually some tiny cracks. It is easy to cause water seepage and violence during use. It is best to plug the cracks before use, and use it to cook rice washing water to plug the tiny cracks in the casserole to prevent water seepage.

Fourthly, the enamel of some casseroles contains a small amount of lead, so it is best to soak and boil the newly bought casseroles in 4% vinegar water, which can remove most harmful substances. If the inner wall of the casserole is colored, it is not suitable for storage, nor for acidic drinks and food.