Did you know you should never microwave eggs in their shells? It might seem like a quick and easy breakfast idea, but this simple mistake could lead to a messy and potentially dangerous explosion. Microwaving eggs in their shells creates steam inside the egg, building up pressure until it bursts. The result? A ruined microwave, a potentially painful burn, and a big clean-up job.

Microwaves are a kitchen staple for many, offering speed and convenience. But as simple as they are to use, they come with hidden risks that many of us overlook. From accidental explosions to chemical hazards, being careless can turn a handy appliance into a source of danger. The good news? With a little knowledge, you can prevent most microwave mishaps and keep your kitchen safe.

Here’s a guide on what else to avoid, along with dos and don'ts to ensure your microwave is used safely and effectively.

Microwave oven. Photo: iStock/goffkein.pro
Microwave oven. Photo: iStock/goffkein.pro

What not to microwave: Avoid these items at all costs

Metal utensils or containers
Anything metal can cause sparks, damage the microwave, or even start a fire. This includes aluminium foil, utensils, and travel mugs with metal linings.

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Plastic containers not labelled microwave-safe
Some plastics can melt or release harmful chemicals when heated. Always check the label or use glass or ceramic alternatives.

Styrofoam
Most styrofoam isn’t designed for high temperatures and can melt, releasing harmful substances into your food.

Sealed containers
Just like eggs, any sealed container (such as soup cans or tightly lidded jars) can explode due to steam buildup. Always vent or remove the lid before microwaving.

Hot peppers
Heating hot peppers in a microwave can release capsaicin into the air, which might irritate your eyes and throat when you open the microwave.

Grapes
Grapes can produce plasma when microwaved, leading to potential burns or damage to your appliance.

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Paper bags or newspaper
These can catch fire and aren’t food-safe. Stick to microwave-safe wraps or containers.

Raw eggs placed inside a microwave oven. Photo: Shutterstock/Saskiautami
Raw eggs placed inside a microwave oven. Photo: Shutterstock/Saskiautami

Water or liquids overheated beyond their boiling point
Overheating water in the microwave can lead to superheating, where the liquid looks calm but erupts violently when disturbed.

Microwave dos and don'ts
Do

  • Use microwave-safe containers like glass, ceramic, or labelled plastics.
  • Stir and check food regularly to ensure even heating.
  • Cover food with a microwave-safe lid or vented wrap to prevent splatters.
  • Use short heating intervals, checking frequently.

Don’t

  • Run the microwave empty, as it can damage the appliance.
  • Heat flammable materials or any object not designed for microwaves.
  • Forget to clean your microwave regularly to prevent build-up that can spark or burn.

Safety first: How to avoid mishaps

  1. Vent your food: Poke holes in items like potatoes, hotdogs, or covered dishes to let steam escape.
  2. Stand back: After heating, let food sit for a few seconds to avoid burns from sudden eruptions.
  3. Know your appliance: Read the microwave’s manual for specific guidelines and wattage recommendations.
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