Aluminum in the microwave

We all know that, if we accidentally put a plate with gold rim or a half-empty cup with a long spoon in the microwave, there is a small spark. But not every kind of metal has the same effect in the microwave. Here we show you if and how you can heat meals in aluminum in the microwave.

Metals melt

Substances, which are mainly metals that have electrical conductivity, can spark sparks in the microwave. Some ornaments on dishes and thin metals such as aluminum foil can even melt due to the high transmission power. It always depends on which and how much food is in the microwave.

Cutlery or a thick bowl made of cast aluminum only gets extremely hot when you put this metal in the microwave. The closer the metal gets to the inside wall of the microwave, the easier it can be for a flashover to occur.

Capacity is crucial

We even buy many dishes in aluminum containers, which are intended to be heated in the microwave. However, you should always put only one of these containers in the microwave and at the same time make sure that it is centered on a non-metallic surface.

In any case, the aluminum cover must be removed from the shell. It is not enough to stab only a few holes there. It becomes problematic if the aluminum trays are too empty or if only very dry food is to be heated in them. Then it can also come to a spark.

  • capacity
  • Size of the shell
  • Position in the microwave
  • non-metallic underlay / glass plates

Transfer of food

The food gets hotter faster and usually tastes better when you turn it into a glass or porcelain dish before microwave heating. At the same time, you can also save some electricity if you do not heat the food in the shielding aluminum tray.

Tips & Tricks

Not only aluminum is difficult in the microwave, ceramic can also cause problems. Older ceramics or stoneware dishes absorb some water when washed through the fine cracks in the glaze. As a result, this material absorbs the rays that are supposed to heat the food. So it happens that such shells are always extremely hot, but the food is not really warm.

Video Board: Making a Polished Aluminum Foil Ball in a Microwave. Microwaving aluminium.