Oven-proof glassware is best as it will let the microwave energy pass through to reach the food but can also withstand the heat when used in grill mode or combination cooking modes.
Do not use metal cookware as this will reflect the microwave energy and can result in arcing and sparking.
Pour some lemon juice and water into a microwave-proof bowl.
Heat on high microwave power for about 2 minutes.
The lemon steam will soften dirt and grease so that it can then be wiped away and will also help to remove odours.
