metal . and tasteless, easy to and more . More comfort for your life. The best for and safe cooking. The air cooking allows the wind of heated air to the food completely, food is heated more evenly and more delicious. It can be used to cook beef, onion rings, fries, or to cook fruit, vegetables and more in the air . Using replacement cooking trays can save you a of time when cooking. The replacement cooking tray for air is easy to in the dishwasher. Please do not rub with the rough abrasive cloth or metal ball to protect the non-stick coating.