Heating container

A heating container comprising:

• a main body in which a heater is inserted and water is poured;
• a built-in container inserted into the main body, the built-in container providing a space for cooking foods therein;
• and
• a sealing cover sealing an opened upper portion of the built-in container, the sealing cover being coupled to the main body when the built-in container is sealed,
• wherein each of the main body and the built-in container is formed of a rigid material, and vapor generated when water within the main body is boiled is discharged between the main body and the built-in container to an outside via a gap;
• wherein a seat part on which a first upper end of the built-in container is seated is disposed on a first, opened, upper end of the main body;
• wherein a hook part hooked on the seat part of the main body to prevent the built-in container from being further inserted into the main body is disposed on a second, opened, upper end of the built-in container;
• and
• wherein the gap between the seat part of the main body and the hook part of the built-in container is about 0.05 mm to about 0.15 mm.