The casserole has fast heat transfer, slow heat dissipation, and strong heat preservation capability. Generally, the food in the casserole can still maintain a temperature close to boiling after turning off the fire for 5 to 10 minutes. The casserole can transfer the external heat energy to the internal raw materials in a balanced and lasting way. The relatively balanced ambient temperature is conducive to the mutual penetration of water molecules and food, and can maximize the release of food taste. It is suitable for slow boiling over a small fire.

The traditional casserole is a kind of pottery. The invention of pottery is an epoch-making symbol in the history of human social development, and also the greatest invention of human development. It is said that Emperor Yao invented the casserole, which has a history of thousands of years.