Abstract: An oven for use in a humidistatic roasted cooking process combines heat, smoke and steam in the cooking of food. The oven includes a pair of shelf support members which are removably positioned adjacent inner side walls of the oven housing. Removable spacers hold the shelf support members in spaced apart positions. Cooking racks, a wood tray, and a water pan are supported between opposing flanges of the pair of support members. The support members are spaced from the inner walls of the sides, and define a pair of plenums for permitting air and steam to travel upward between the support member and its adjacent wall and then impinge upon food located on the cooking racks. A heater in the form of a pair of electrical elements are located below the wood tray. An inner element is located immediately below the wood tray, and is maintained on continuously to provide smoke within the oven. The outer heater element is controlled to maintain a predetermined cooking or holding temperature within the oven.