7Materials you can use in microwave ovenUtensils RemarksAluminum foil Shielding only. Small smooth pieces can be used to coverthin parts of meat or poultry to prevent overcooking.Arcing can occur if foil is too close to oven walls. The foilshould be at least 1 inch (2.5 cm) away from oven walls.Browning dish Follow manufacturer’s instructions. The bottom of browningdish must be at least 3/16 inch (5 mm) above the turntable.Incorrect usage may cause the turntable to break.Dinnerware Microwave-safe only. Follow manufacturer’s instructions.Do not use cracked or chipped dishes.Glass jars Always remove lid. Use only to heat food until just warm.Most glass jars are not heat resistant and may break.Glassware Heat-resistant oven glassware only. Make sure there is nometallic trim. Do not use cracked or chipped dishes.Oven cooking bags Follow manufacturer’s instructions. Do not close withmetal tie. Make slits to allow steam to escape.Paper plates and Use for short-term cooking/warming only. Do not leavecups oven unattended while cooking.Paper towels Use to cover food for reheating and absorbing fat. Use withsupervision for short-term cooking only. Do not use recycledpaper towels, they may contain metal and could ignite.Parchment paper Use as a cover to prevent splattering or a wrap for steaming.Plastic Follow the manufacturer’s instructions. Only use itemslabeled “Microwave Safe”. Some plastic containers softenas the food inside gets hot. “Boiling bags” and tightlyclosed plastic bags should be slit, pierced or vented asdirected by package.Plastic wrap Microwave-safe only. Use to cover food during cookingto retain moisture. Do not allow plastic wrap to touch food.Thermometers Microwave-safe only (meat and candy thermometers).Wax paper Use as a cover to prevent splattering and to retain moisture.Materials to be avoided in microwave ovenUtensils RemarksAluminum tray May cause arcing. Transfer food into microwave-safe dish.Food carton with May cause arcing. Transfer food into microwave-safe dish.metal handleMetal or metal- Metal shields the food from microwave energy. Metal trimtrimmed utensils may cause arcing.Metal twist ties May cause arcing and could cause a fire in the oven.Paper bags May cause a fire in the oven.Plastic foam cups Plastic foam may melt or contaminate the liquid insidewhen exposed to high temperature.Wood Wood will dry out when used in the microwave oven andmay split or crack.SAFETY