The odor of flour
might also be considered a test. Flour must not have a musty odor nor
any other odor foreign to the normal, rather nutty flavor that is
characteristic of flour.
The bleaching and adulteration of flour are governed by the United
States laws. Bleaching is permitted only when it does not reduce the
quality or strength nor conceal any damage or inferiority. Such flour
must be plainly labeled to show that it has been bleached.
20. CARE OF FLOUR.--There is considerable economy in buying flour in
large quantities, but unless an adequate storing place can be secured,
it is advisable to buy only small amounts at a time. Flour absorbs odors
very readily, so that when it is not bought in barrels it should if
possible be purchased in moisture-proof bags. Then, after it is
purchased, it should be kept where it will remain dry and will not be
accessible to odors, for unless the storage conditions are favorable, it
will soon acquire an offensive odor and become unfit for use. Flour
sometimes becomes infested with weevils, or beetles, whose presence can
be detected by little webs. To prevent the entrance of insects and
vermin of all kinds, flour should be kept in tightly closed bins after
it is taken from the barrels or sacks in which it is purchased. If newly
purchased flour is found to be contaminated with such insects, it should
be returned to the dealer.
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