Grapes can explode when they become too hot
It’s best not to microwave any fruit. It may seem like a simple way to heat up fruit or stew it for a specific dish, but this could be dangerous. When grapes are exposed to microwave radio waves, they release a plasma-like substance.
This can cause the grapes to explode or even smoke. Raisins are also dehydrated grapes and may have the same issue. If you’re looking to warm or stew up most fruits, it’s best not to use the microwave. You will avoid any mess by not using fruit.
Aluminum foil can ignite dangerous fires when heated in a microwave
Aluminum foil is also a metal, just like any other metallic object. Metal in a microwave bounces radio waves throughout the appliance, almost like a mirror. When metal is microwaved, it cannot absorb heat. The radio waves can cause sparks or even worse when they bounce around the microwave.
Metal in the microwave can be a fire risk and should not be done. In the best case scenario, you will have to replace your microwave. The worst-case is that you may cause a fire. Instead, always put your food in a container that is microwave safe. This also applies to cans, tins and other metallic containers.
