Jacketed pot is also known as steam pot, cooking pot and jacketed steam pot. It usually consists of a pot body and legs. The pot is a double-layer structure composed of an inner and outer spherical pot, and the middle interlayer is heated by steam. There are fixed, tilting, stirring and other styles. The sandwich pot is characterized by large heating area, high thermal efficiency, uniform heating, short boiling time of liquid materials, easy control of heating temperature, beautiful appearance, easy installation, convenient operation, safety and reliability. The sandwich pot is widely used in the processing of all kinds of food, and can also be used in large restaurants or canteens to cook soup, stew, congee, etc. It is a good equipment for improving the quality, shortening the time, and improving the working conditions of food processing