It has multiple functions such as cooking, stewing, stewing, roasting, insulation, cold insulation, and easy to carry; Moreover, it is safe, energy-saving, environmentally friendly, and the stewing process does not emit gas or evaporate, preserving the nutrition of the food and ensuring its original taste; No need to wait. Energy free state. The appearance is similar to that of a cup. It is divided into cup body and cup cover.