In fact, the
housewife, by taking care of the bags and boxes that come into the home,
can easily provide all the containers she will possibly need at
practically no cost.
109. The water in food that is to be dried may be evaporated by applying
heat, by bringing the food in contact with moving air, or by subjecting
it to a combination of both of these methods. The heat for drying may be
obtained from the sun, as in the _sun-drying method_, or from the stove,
as in the _stove-drying method_, while moving air for evaporating
moisture may be obtained from an electric fan, as in the _electric-fan
drying method_.
In the application of any of these drying methods, however, it is
important to note that the more surface of food there is exposed, the
more quickly will evaporation take place. Drying should therefore be
done on devices constructed in such a way that air may pass up through
food, as well as across its surface. In drying foods, the racks should
be turned frequently, so that all parts will be exposed equally to the
heat or the currents of air. Also, the food must be turned over often,
in order that all parts will dry evenly.
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