EN-18
GUIDE
USEFUL THINGS TO KNOW ABOUT
MICROWAVES
Microwaves set the water molecules contained in
the food vibrating. The resulting friction generates
heat that can be used to defrost or cook the food.
Food
The microwaves are
absorbed by the food
SUITABLE UTENSILS
Glass, Glass-ceramics and Porcelain
Heat-resistant utensils made of glass, glass-ceramic
or porcelain are suitable. However, the utensils must
not contain metals (e.g., lead crystal) or be metal-
plated (e.g., gold rim, cobalt blue).
Glass, Porcelain, Ceramics
Plastics, paper etc.
Microwaves
pass through
Ceramics
are usually suitable but they must be enamelled.
When using utensils that are not enamelled,
moisture can be absorbed by the material and heat
it up. This can cause the material to crack.
Plastics and Paper Dishes
Heat-resistant and microwave-proof plastic utensils
or paper dishes are suitable for defrosting, heating
and cooking. Please follow the manufacturer's
instructions.
Microwave Plastic Wrap
or heat-resistant wrap is suitable for covering and
wrapping food. Please follow the manufacturer's
instructions.
Roasting Bags
can be used in microwave ovens. Do not close the
bags with a metal clip because the clip may cause
the bag film to melt. Close the bag with string and
pierce it several times with a fork. Films that are not
heat-resistant, e.g., films to retain product freshness
are not recommended for use in microwave ovens.
Metals
should not, as a rule, be used in microwave ovens
because microwaves cannot penetrate metals and
reach the food inside.
There are, however, some exceptions: Small strips
of aluminum foil can be used to cover parts to
prevent them from defrosting or cooking too fast
(e.g., chicken wings).
Metal
Microwaves are
reflected
Small metal skewers and aluminum trays (of
prepackaged food) may be used. However, they
must be small in proportion to the food. Aluminum
containers, for example, must be filled to at least 2/3
to 3/4 with food.
It is recommendable to transfer the food into
microwavesafe containers.
When using aluminum trays or other metal utensils,
they must be placed at least 2.0 cm away from the
cavity walls. Otherwise the cavity walls may be
damaged by sparking.
Do not use any utensils with metal-plating, metal
parts or metal projections like screws, ribbons, or
handles.
TESTING UTENSILS
Perform the following test if you are unsure whether
a certain utensil is microwave-safe: Place the utensil
into the oven, put a glass containing about 150 ml
of water on or beside the utensil, and operate the
microwave oven at 100% power for 1 to 2 minutes.
If it is cool orluke-warm to the touch, the utensil is
suitable for microwave use. Do not perform this test
on plastic dishes because the plastic might melt.
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