Materials 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. Arcingcan occur if foil is too close to oven walls. The foil shouldbe at least 2.5 cm away from oven walls.Browning dish Follow manufacturer’s instructions, The bottom ofbrowning dish must be at least 5 mm above the turntableIncorrect 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 with metaltie. Make slits to allow steam to escape.Paper plates and Use for short-term cooking/warming only. Do not leavecups oven unattended while cooking.I Paper towels Use to cover food for reheating and absorbing fat. Use withsupervision for a shofl-term cooking only.Parchment paper Use as a cover to prevent spattering or a wrap forsteaming.Plastic Microwave-safe only. Follow the manufacturer’sinstructions. Should be labeled “Microwave Safe!’ Someplastic containers soften as the food inside gets hot.“Boiling bags” and tightly closed plastic bags should beslit, pierced or vented as directed by package.Plastic wrap Microwave-safe only. Use to cover food during cooking toretain 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 retainmoisture.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.