Normal microwave cooking boils and drives moisture away from food – thats why microwave ovens steam up during cooking. The Microwave Roasters speciall designed meat rack reflects microwaves upward and awaqy from the drippings in the pan, reducing steaming and boiling of these jusices. the result: meat thats brown and crisp on teh outdise, mist and juicy on the inside… n a fraction of the time of conventioanl oven roasting. Its great for poultry, too! Were so sure its the best we give a Limited Lifetime Warranty!