NOVELTY - A container (10) consists of a plate-shaped component (20) having a mounting surface (21) which is a surface in which a solid fuel is mounted, and a bottom face (22) which is a surface on the back side of the mounting surface. The mounting surface and the bottom face have a mechanism of curved surfaces, where one side is convex form and other side is concave shape. The plate-shaped component has a mechanism which inverts orientation of concave shape and orientation of convex shape, when a force is applied toward the concave surface from the surface of the convex shape.    USE - Container is used for solid fuels used for heating single-person pan in hotel and restaurant.    ADVANTAGE - Since the container can be reversed, the removal of solid content of burned solid fuel is easy. Since covering of solid fuel with nonflammables is not required, the fall of the thermal power during combustion is prevented. Since the plate-shaped component can be returned to the original form when force is applied in opposite orientation with respect to plate-shaped component after removing solid content, recycling of the container is easy.    DETAILED DESCRIPTION - A container consists of a plate-shaped component for mounting a solid fuel containing alcohol and flame-retardant solid content which solidifies alcohol. The plate-shaped component has a mounting surface which is a surface in which a solid fuel is mounted, and a bottom face which is a surface on the back side of the mounting surface. The mounting surface and the bottom face have a mechanism of curved surfaces, where one side is convex form and other side is concave shape. The plate-shaped component has a mechanism which inverts orientation of concave shape and orientation of convex shape, when a force is applied toward the concave surface from the surface of the convex shape.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the container.    Container (10)    Plate-shaped component (20)    Mounting surface (21)    Bottom face (22)