A combi steamer (or combi-steamer) is a professional cooking appliance that combines the functionality of a convection oven and a steam cooker. That is, it can produce dry heat, moist heat or a combination of the two at various temperatures. The appliance is therefore fit for many culinary applications, including baking, roasting, grilling, steaming, braising, blanching and poaching. The advantages of this technology are quick cooking times and a gentle preparation method, both of which lead to enhanced vitamin and nutritional preservation when compared to traditional cooking methods. Combi ovens utilize several different cooking methods, like steam, convection and radiant heat, to increase cooking efficiency and product quality. Combination cooking allows the user to boil, steam, poach, bake, grill and fry all in one unit. Combi ovens provide a steamer and an oven all in one piece of equipment. Combi ovens offer three methods of cooking in one unit: pressureless steam, convected heat and a combination of both. Programmable functions allow for steaming, baking and rethermalizing.