Miele H4080BM Operating And Installation Instructions page 24

Selecting cookware
Plastics
Use plastic dishes only for
Microwave - Solo. They must be
heat resistant up to 230°F (110°C)
otherwise the plastic may melt into
the food.
Special plasticware, designed for use
in microwave ovens is available in retail
outlets.
Plastic boiling bags can be used for
cooking and reheating.
They should be pierced beforehand
so that steam can escape. This
prevents a build-up of pressure and
reduces the risk of the bag bursting.
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Roasting bags
These bags can be used in the
microwave oven. Please follow the
manufacturers' instructions.
Wood
Wood containers are not suitable.
The water from the wood evaporates
during the cooking process causing it
to dry out and crack.
Disposable containers
Only those plastic disposable
containers specified under "Plastics"
are suitable for use in the microwave
oven.
Do not leave the oven unattended
when reheating or cooking food in
disposable containers made of
plastic, paper or other flammable
materials.
Disposable containers are not always
microwave safe.