Soak in cold water for a while before use. Purple casserole is a new generation of health pot. The use method of Supor purple casserole is to soak it in cold water for a period of time before use, and do not put hot water when cooking. It can remove metal materials and chemical coatings harmful to human health, and the inner container made of high-quality natural purple sand and fine ceramics is safe and harmless to human body.