To facilitate clearing by quickly performing combustion with inflow air from an opening part to heighten the efficiency of heat cooking when mak ing a fire and dropping ashes in an ash catch tray at the time of heat cooking by opening the bottom of a main body and removably installing the ash catch tray below the opening part.

Large opening parts 16 are bored in the bottom of a container part 11 in two, right and left sides divided in the longitudinal direction, the lower surfaces of both sides of the opening parts 16 are provided with a suspension guide 17 having an elongated placing plate like a hook, and the front bottoms of the opening parts 16 are provided with a recessed part for a stopper. An ash catch tray 5 is installed like a drawer in the suspension guides 17 arranged on the lower surface of the container bottom of the main body 1 by making the upper edges of both sides of the tray part 15 project right and left, and the front of the tray is provided with a grip 52 formed higher than the upper edge of the container 11 and with a stopper 53 having a projection corresponding to the recessed part for a stopper. After the end of cooking, half-burned fuel on a plate part 31 is dropped in the ash catch tray 5.