Bosch Microwave Oven Instruction Manual page 77

Drying food
Food with a low water
content
Cooking oil
Always prick foodstuffs with a peel or skin such as
apples, tomatoes, potatoes and sausages before
cooking to prevent the peel or skin from bursting.
d
Never use the microwave to dry food.
Risk of fire
d
Do not defrost or heat food at too high a power or for
too long if the food has a low water content, e.g.
bread.
Risk of fire
d
Never use the microwave to heat cooking oil on its
own.
Risk of fire
77