2. The nutritional value is high. In addition to iron, purple casserole also contains many elements beneficial to human body, such as potassium, calcium and magnesium. Purple casserole stew can avoid the harm of inferior metal materials and chemical coatings to human body. Moreover, like the bear purple casserole, the Taji pot cover is specially designed, and the most special place is its high hat. This triangular cone will make the steam cycle in the pot rise and minimize the evaporation of water. So as to prevent food nutrition loss caused by a large amount of water evaporation. Therefore, it is no wonder that mothers who pay attention to health like to stew soup in purple casserole.