To save time, labor and fuel in cooking.

The pot cover, which is made of cloth that holds a plenty of air such as a thin futon, quilt or blanket fabric, has the form of a cross defined by a base cloth piece 1 to which four cloth pieces 2, 3, 4 and 5 are sewn like blades. For further improving its heat retaining effect, the base cloth piece 1 is doubled and the other foul cloth pieces 2 to 5 are placed so that their corners are put one on the other when sewn to the base cloth piece 1 for batter airtightness. For practical use, a pot that is boiled up only for several minutes is put on the base cloth piece 1 so as to be covered in the four blades 2 to 5 in four layers, which method maintains the remaining heat to allow various types of cooking, such as boiled food, Japanese hotchpotch, stew, curry and Japanese broth.