Discover 7 everyday things you should never put in the microwave, from aluminium foil and eggs to sealed containers, and learn simple microwave safety tips.
Aluminium FoilMetal can reflect microwave energy and may cause sparks or even a fire. Avoid putting aluminium foil or metal objects inside unless the appliance instructions specifically allow it
Eggs in Their ShellHeating a whole egg in its shell can build up steam inside and cause it to burst. If you need to microwave eggs, use a microwave-safe method and container.
GrapesWhole grapes can heat unevenly and, under certain conditions, produce sparks or plasma. It’s best to avoid microwaving them whole.
Takeaway ContainersSome takeaway containers contain metal, foil or coatings that aren't designed for microwave heating. Transfer the food to a microwave-safe dish instead.
6. Hot PeppersHeating whole chilli peppers can release irritating vapours when opened. Handle them carefully and avoid microwaving whole peppers unless you're following a suitable recipe.
Sealed ContainersA tightly sealed container can trap steam and pressure during heating, potentially causing it to burst. Always loosen the lid or use a vented microwave-safe container.