PURPOSE: To obtain a cooker in which a cover supporting means for supporting a lid in demountable manner on a hinge is prevented from being damaged by heat and dirted, and the lid supporting means can easily be operated.

CONSTITUTION: A lid supporting means B which installs a lid 19 which opens and closes the upper surface opened port of a body case 13 and has a heating source 18 inside, in demountable manner for an upper side hinge member 31 of a hinge A is arranged outside the cover body 19, and this means B is prevented from being exposed to the heat of the heating source 38 and the oil supplied from a cooking article.