When you're trying to save time and/or money on your workweek lunches, the office microwave can be invaluable.
Whether dining on a leftover meal stored in a plastic container or a pre-packaged frozen meal, busy professionals can enjoy quick, healthful and inexpensive lunch breaks by following these tips for using plastic in the microwave:
Recycling and reusing are good for the environment, but you shouldn't use plastic takeout containers from restaurants and grocery stores, old margarine tubs or polystyrene boxes to reheat leftovers, according to the USDA Food Safety and Inspection Service. Those containers are fine for the food originally packaged in them, but they have not been tested or approved for any other use, including cooking or reheating.
Microwave food in the container it came in only if the labeling says it's microwave-safe, and then use it only once.
If you can't find a manufacturer's instructions for microwave use, use a different container. Some plastic trays, wraps and containers from store delis and restaurants are not designed for the microwave. The high temperatures that food reaches can melt or warp the plastic, and can cause the food to spill, according to the American Plastics Council.
Trays and containers provided with microwave meals should not become your office dishes. They may be convenient, but most trays and containers are intended for one-time use with certain kinds of foods.
In addition, most cold-food packages are designed for cold use only. Heating can cause margarine tubs, cottage cheese containers and foam meat trays to melt and warp, causing spills or burns, the Food and Drug Administration says.
Use plastic wrap recommended for microwave use to retain moisture, provide even cooking and prevent splatters. Place plastic wrap loosely over bowls and dishes during heating. The wrap shouldn't touch the food--as it heats up, it could cause the plastic to melt.