A holder configured to hold a deadweight within a steam box of a cooking apparatus, the holder comprising: a top plate, including: a through hole disposed at substantially a center of the top plate, the through hole being configured to allow at least one of liquid and steam to pass therethrough, a first surface, and a second surface, the first surface being opposite the second surface; an exhaust cylinder attached to the first surface of the top plate; a bottom plate; a plurality of support plates (340, 341), including: a first end of each of the plurality of support plates (340, 341) that is attached to and extends from the second surface of the top plate in a direction substantially perpendicular to the second surface, and a second end of each of the plurality of support plates (340, 341) that is attached to the bottom plate; and a plurality of guide plates (350, 360) disposed between the top plate and the bottom plate, each of the plurality of guide plates (350, 360) attached to the plurality of support plates (340, 341), wherein the bottom plate includes a third surface and a fourth surface, the third surface being opposite of the fourth surface, wherein the third surface of the bottom plate is substantially parallel to the first surface of the top plate, wherein an outer diameter of the bottom plate is smaller than an outer diameter of the top plate and an outer diameter of each of the plurality of guide plates (350, 360), wherein the plurality of guide plates (350, 360) are configured to permit movement of the deadweight therethrough, wherein the top plate further includes a plurality of attachment holes configured to attach the plurality of support plates (340, 341) to the second surface of the top plate, and wherein the plurality of attachment holes extends through the top plate from the first surface to the second surface. a top plate, including: a through hole disposed at substantially a center of the top plate, the through hole being configured to allow at least one of liquid and steam to pass therethrough, a first surface, and a second surface, the first surface being opposite the second surface; a through hole disposed at substantially a center of the top plate, the through hole being configured to allow at least one of liquid and steam to pass therethrough, a first surface, and a second surface, the first surface being opposite the second surface; an exhaust cylinder attached to the first surface of the top plate; a bottom plate; a plurality of support plates (340, 341), including: a first end of each of the plurality of support plates (340, 341) that is attached to and extends from the second surface of the top plate in a direction substantially perpendicular to the second surface, and a second end of each of the plurality of support plates (340, 341) that is attached to the bottom plate; and a first end of each of the plurality of support plates (340, 341) that is attached to and extends from the second surface of the top plate in a direction substantially perpendicular to the second surface, and a second end of each of the plurality of support plates (340, 341) that is attached to the bottom plate; and a plurality of guide plates (350, 360) disposed between the top plate and the bottom plate, each of the plurality of guide plates (350, 360) attached to the plurality of support plates (340, 341), wherein the bottom plate includes a third surface and a fourth surface, the third surface being opposite of the fourth surface, wherein the third surface of the bottom plate is substantially parallel to the first surface of the top plate, wherein an outer diameter of the bottom plate is smaller than an outer diameter of the top plate and an outer diameter of each of the plurality of guide plates (350, 360), wherein the plurality of guide plates (350, 360) are configured to permit movement of the deadweight therethrough, wherein the top plate further includes a plurality of attachment holes configured to attach the plurality of support plates (340, 341) to the second surface of the top plate, and wherein the plurality of attachment holes extends through the top plate from the first surface to the second surface.