The biggest advantage of clay pot lies in the following two points: 1 sealing and temperature: easy to taste and good internal circulation, making soup, soup and stew. For example, meat tends to rot and tofu tends to go bad. 2. Thermal insulation materials conduct heat slowly. Some soups are not hot, but warm. Casseroles are far more effective than other pots in this respect. Pottery pot is a kind of edible vessel, which is made of porcelain clay by high temperature firing. As early as the Tang Dynasty, China's ceramic industry was quite developed and unique in the world.