Microwave Cookware

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Cookware for the microwave is different than other cookware. Most cookware that is used on the stovetop or in the oven cannot be used in a microwave oven. Microwave cookware is generally made from glass, ceramic or plastic and not all glass, ceramic and plastic containers are microwave oven safe. If a container is not microwave safe, it can heat up in the microwave and become a safety hazard.

Most plastics work well in the microwave oven, but not all. If their label indicates that they are able to withstand boiling water and if it states that they are dishwasher safe, they should be able to withstand the heat from the microwave. Glassware for the microwave should be heat-resistant. Non-heat-resistant glass cannot withstand the high and uneven heat from the microwave.

Ceramic cookware should be unglazed. Glazed ceramic absorbs the microwave energy too quickly, which can cause it to break or become heated to a high temperature. The best style of microwave cookware to use is a dish that has shallow sides and is round or oval in shape. There are microwave cookware sets available that contain different size and shape containers that are suitable for the microwave.

Note: To test a dish or container to see if it is microwave safe, fill a 1-cup glass measuring cup with water and place it next to the dish or container in the microwave. Start the microwave on high power and run for 1 minute. After a minute, check the water and the container you are testing. The water should be hot but if the container is also hot, it is not microwave safe!

Can you microwave Styrofoam?

In the case of plastics, it’s said that some types can be manufactured in a way that allows for usage in a microwave oven. Styrofoam is a type of plastic which is argued to be among those that are not normally microwave-safe, but that can be manufactured for microwave use as well, so check the label on the packaging and look for a microwave-safe symbol. If any doubt, don’t use it in a microwave oven.