The invention relates to a self-cleaning deadweight holder configured to hold a deadweight within a cooking apparatus. In some embodiments, the holder may comprise a top plate, an exhaust cylinder, a bottom plate, a plurality of support plates, and a plurality of guide plates. The top plate may include a through hole disposed at substantially a center of the top plate and configured to allow at least one of liquid and steam to pass therethrough. An outer diameter of the bottom plate may be less than an outer diameter of the top plate and an outer diameter of each of the plurality of guide plates, and the plurality of guide plates may be configured to permit movement of the deadweight therethrough. In some embodiments, the cooking apparatus may comprise a cooking chamber, a steam box, a vent tube, an exhaust tube, a drain tube, and a pressure relief tube.