The raw materials of the casserole and the glaze on the pot contain heavy metals. The safety of unglazed casseroles is poor, because the casseroles made of clay are easy to corrode when containing acidic foods, and the heavy metal components in them may enter the food and harm human health; The main source of heavy metals in the glazed casserole with poor quality is the lead in the glaze.

Lead in the glaze of inferior casserole can be dissolved by acid. When acidic food comes into contact with the glaze, lead may be dissolved by organic acids in the food. With the food entering the human body, it will cause great harm to the human body and cannot be metabolized.

Casseroles bought in regular supermarkets and shopping malls are generally safe. Casseroles with enamel and smooth surface have strong corrosion resistance and can prevent heavy metal substances from precipitating. The safe way of stewing casserole is to use less oil and avoid acid, so it is necessary to prevent heavy metal poisoning caused by wrong ingredients when choosing casserole ingredients.

Extended data:

Matters needing attention in using casserole correctly:

1 When the newly bought casserole is used for the first time, it's best to cook porridge, or use it to boil concentrated rice washing water to block the tiny pores of the casserole and prevent water seepage.

2, the enamel of the casserole contains a small amount of lead, so the newly bought casserole, it is best to soak it in 4% vinegar water and boil it first, so that most harmful substances can be removed. The inner wall of the casserole is colored, so it is not suitable to store wine, vinegar, acidic drinks and food.

3. When using a casserole to cook soup and stew meat, you should first put water into the casserole, and then put the casserole on the fire, first with a slow fire, and then with a strong fire. When placing the casserole from the top of the fire, be sure to put it on a dry wooden board or straw mat, and never put it on a tile or cement floor.

People's Network-Cracking the casserole or leaking heavy metals, is it credible?

People's Daily Online-What are the benefits of cooking in a casserole?