Two tiers stackable containers to cook different foods in the separate containers at the same time, great for pot-in-pot cooking, preserve the nutrients and vitamins, such as steaming rice, vegetables, cornbread, stuffing, etc. Cook variety of healthy and tasty dishes simultaneously by stacking. Reheat leftover food in pressure cookers, and avoid the microwave. Also make cheesecakes without using non-stick pans/Separator. Store cooked and leftover food in refrigerator.