Appliance

Microwave

ApplianceMicrowaveHigh-power appliance for heating food

Where microwave can go

Extension CordVerdict: RISKYAvoid using an extension cord unless your microwave’s manual explicitly permits one. Plug the microwave directly into a properly grounded wall outlet and follow the manual’s circuit requirements. Some manufacturers allow a correctly rated grounding cord under specific conditions, while others prohibit extension cords outright.

What goes with microwave

Aluminum FoilVerdict: YES, WITH LIMITSYes, but only if your microwave owner's manual allows foil in microwave mode and you follow its method exactly. Use a small, smooth piece pressed close to the food for shielding, with clear space from the oven surfaces and other metal. If the manual is silent, leave the foil out.
Paper PlateVerdict: YES, WITH LIMITSYes, with limits. Use a paper plate labeled microwave-safe for brief reheating in microwave-only mode, and follow your oven manual. If the plate has no microwave-safe statement, move the food to microwave-safe glass or ceramic; recycled, printed, or coated plates need specific manufacturer approval. Paper can scorch if overheated, while hidden metal or other impurities can cause arcing.
Plastic ContainerVerdict: YES, WITH LIMITSYes, but only when the specific container is labeled microwave-safe or comes with microwave heating directions. Move food out of unlabeled takeout or delivery tubs and cold-storage containers before heating. Follow the container and microwave instructions, including any lid or vent directions.
PyrexVerdict: YES, WITH LIMITSYes, with limits. Pyrex glassware can be used in a microwave for cooking, warming, and reheating food when it is undamaged and the manufacturer’s use-and-care instructions are followed. Do not microwave Pyrex metal bakeware, stainless-steel bowls, empty or nearly empty glassware, or popcorn and browning wrappers in the glass.
StyrofoamVerdict: YES, WITH LIMITSYes, but only when the specific foam container is clearly labeled microwave-safe or comes with microwave heating instructions, and your microwave manual permits it. Put ordinary Styrofoam takeout boxes, cups, plates, and supermarket foam trays in the no category. Heat from the food can deform or melt unrated foam and may allow packaging chemicals to migrate into the food.
Parchment PaperVerdict: YES, WITH LIMITSYes, plain food-grade parchment paper can go in a microwave during microwave-only cooking. Use it beneath food or as a loose cover on a microwave-safe dish. Check the appliance manual before using it with convection, grill, air-fry, or speed-cook settings.