:Valve Usage
Source of Recipe
from the turbo sight on yahoo
Recipe Introduction
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List of Ingredients
Valve Usage
The valve is used for several reasons.
In baking it assists the cake to rise as well as to cook the bottom
of the cake pan (by having the valve open heat is drawn up through
the unit and therefore cooking the bottom of the cake); and with
the valve closed, you cook the top more (because with the valve
closed the heat and steam circulate instead of venting out the
opening of the cover).
For the same reason, the heat is lowered and raised in sequence
with the valve opening and closing. With the valve open you
compensate for the loss of heat (that would circulate) by increasing
the steam. By closing the valve, the cover would rock and splatter all
over, so this is why we lower the heat.
Also, with the valve closed less heat is needed to boil the water
because less is escaping (due to it being trapped inside the unit).
Water is added to replace the boiled away water/moisture, (in the
form of steam.)Recipe
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