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Materials That Can Be Used in the Microwave
Utensils
Remarks
Aluminum foil
Shielding only. Small smooth pieces can be used to cover thin
parts of meat or poultry to prevent overcooking. Arcing can occur
if the foil is too close to oven walls. The foil should be at least 1
inch (2.5cm) away from oven walls.
Browning dish
Follow the manufacturer’s instructions. The bottom of a browning
dish must be at least 3/16 inch (5mm) above the turntable.
Incorrect usage may cause the turntable to break.
Dinnerware
Microwave-safe only. Follow the 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 the 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.
Greaseproof paper
Use as a cover to prevent splattering or a wrap for steaming.
Plastic containers
Microwave-safe only. Follow the manufacturer’s instructions.
Should be labelled “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 the instructions on their packaging.
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 retain moisture.
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