Microwaving Principles - Panasonic NN-GD379S Operating Instruction And Cook Book

Microwave energy has been used in this
country to cook and reheat food since early
experiments with RADAR in World War II.
Microwaves are present in the atmosphere all
the time, both naturally and from manmade
sources.
How Microwaves cook food
The microwaves cause the water molecules to
vibrate which causes FRICTION, i.e. HEAT. This
heat then cooks the food. Microwaves are also
attracted to fat and sugar particles, and foods high
in these will cook more quickly. Microwaves can
only penetrate to a depth of 1½ -2 inches (4-5 cm)
and as heat spreads through the food by
conduction, just as in a traditional oven, the food
cooks from the outside inwards.
Important notes
The dish used to cook or reheat the food will get
warm during cooking, as the heat conducts from
the food. Even in micro waving, oven gloves are
required!
MICROWAVES CANNOT PASS THROUGH
METAL AND THERE FORE METAL COOKING
UTEN SILS CAN NEVER BE USED IN A
MICROWAVE, FOR COOKING ON MICROWAVE
ONLY

Microwaving Principles

Manmade sources include radar, radio,
television, telecommunication links and car
phones.
In a microwave oven, electricity is converted
into microwaves by the MAGNETRON.
Reflection
The microwaves bounce off the metal walls
and the metal door screen.
Transmission
Then they pass through the cooking containers
to be absorbed by the water molecules in the
food, all foods contain water to a more or
lesser extent.
Foods Not Suitable for Cooking by
Microwave Only
Yorkshire Puddings, Souffles, Double Crust Pastry
Pies.
This is because these foods rely on dry external
heat to cook correctly, do not attempt to cook by
micro wave.
Foods that require deep fat frying cannot be
cooked either.
Standing Time
When a microwave oven is switched off, the food
will continue to cook by conduction – NOT BY
MICROWAVE ENERGY. Hence STANDING TIME
is very important in microwaving, particularly for
dense foods i.e. meat, cakes and reheated meals
(refer to page 12).
Boiled Eggs
Do not boil eggs in your microwave. Raw
eggs boiled in their shells can explode and
cause serious injury
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