Are You Smarter Than a Tortus?

February 17, 2010

When you microwave an object, you input energy into its molecules, stimulating a chemical reaction and producing heat, which is exactly what you want to do when you want a hot meal. However, the same process happens to the plastic containers that many of us microwave our food in, sometimes with unhealthy consequences.

Certain plastics, such as those numbered ‘3’, ‘6’ and ‘7’ are known to contain potentially harmful chemicals that can leach out into food if heated in a microwave. Definitely avoid heating anything in one-time use plastic containers such as margarine tubs and yogurt cups. Plastic containers numbered ‘1’, ‘2’, ‘4’ and ‘5’ are generally considered safer. To be really safe, heat your food in microwave-safe glass or ceramic containers. And if you put plastic wrap on top to avoid the messy consequences of exploding spaghetti, keep the plastic from touching the surface of the food.

Other things you should avoid microwaving? We haven’t tested all of these at home and don’t advise you to either, but we’ve heard to avoid microwaving grapes (explosion), soap (way too many bubbles), hot peppers (their burning oils become airborne), and dry kitchen sponges (Houston, we have ignition!). Generally, if it’s not food, it shouldn’t go in the microwave. And while marshallow candies are technically considered food, they too can wreak havoc in the microwave!