In cooking, every fuel should be
made to do its maximum amount of work, because waste of fuel also adds
materially to the cost of cooking and, besides, it often causes great
inconvenience. For example, cooking on a red-hot stove with a fire that,
instead of being held in the oven and the lids, overheats the kitchen
and burns out the stove not only wastes fuel and material, but also
taxes the temper of the person who is doing the work. From what has just
been said, it will readily be seen that a knowledge of fuels and
apparatus for producing heat will assist materially in the economical
production of food, provided, of course, it is applied to the best
advantage.
COAL AND COKE
50. VARIETIES OF COAL.--Possibly the most common fuel used for cooking
is coal. This fuel comes in two varieties, namely, _anthracite_, or
_hard coal_, and _bituminous_, or _soft coal_. Their relative cost
depends on the locality, the kind of stove, and an intelligent use of
both stove and fuel. Hard coal costs much more in some places than soft
coal, but it burns more slowly and evenly and gives off very little
smoke. Soft coal heats more rapidly than hard coal, but it produces
considerable smoke and makes a fire that does not last so long. Unless a
stove is especially constructed for soft coal, it should not be used for
this purpose, because the burning of soft coal will wear it out in a
short time.
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