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Materials you can use in microwave oven
Materials to be avoided in microwave oven
Utensils Remarks
Aluminum foil Shielding only. Small smooth pieces can be used to cover thin parts of meat
or poultry to prevent over cooking. Arcing can occur if foil is too close to oven
walls. The foil should be at least 1 inch (2.5 cm) away from oven walls.
Browning dish Follow manufacturer’s instructions. The bottom of browning dish 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 no metallic trim. Do not
use cracked or chipped dishes.
Oven cooking
bags
Follow manufacturer’s instructions. Do not close with metal tie. Make slits to
allow steam to escape.
Paper plates
and cups
Use for short-term cooking/warming only. Do not leave oven
unattended while cooking.
Paper towels Use to cover food for reheating and absorbing fat. Use with supervision for
short-term cooking only. Do not use recycled paper 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 items labeled “Microwave
Safe”. Some plastic containers soften as the food inside gets hot. “Boiling bags”
and tightly closed plastic bags should be slit, pierced or vented as
directed by package.
Plastic wrap Microwave-safe only. Use to cover food during cooking to 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.
Utensils Remarks
Aluminum tray May cause arcing. Transfer food into microwave-safe dish.
Food carton with
metal handle
May cause arcing. Transfer food into microwave-safe dish.
Metal or metal-
trimmed utensils
Metal shields the food from microwave energy. Metal trim may cause arcing.
Metal twist ties Maycausearcingandcouldcauseareintheoven.
Paper bags Maycauseareintheoven.
Plastic foam
cups
Plastic foam may melt or contaminate the liquid inside when exposed to
high temperature.
Wood Wood will dry out when used in the microwave oven and may split or crack.
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