object of this "working" is to separate from the crude butter as much of the curd and other non-fatty constituents of the cream as can be conveniently accomplished. The removal of these mechanical particles not only makes a butter of a higher grade but also one of better keeping qualities. The working of butter also has much to do with its grain or texture, which is one of the characters of butter to which great attention must be paid. The best grade of butter and that which brings the highest price in the market is that which receives no treatment other than that of the washing and working process to which attention has been called. This kind of butter is known as natural or unsalted or uncolored butter, that is, a fresh, sweet product of an agreeable aroma, palatable, of fine texture and grain, and is the best product of its kind for human consumption. It also brings the highest price on the market and, by reason of its method of preparation, the consumer can usually be assured that it is fresh in character.
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Fig. 20.—Power Churn Ready for Use.—(Courtesy of the Bureau of Animal Industry.)
Salting Butter.—In the United States, especially, consumers of butter generally require that it shall be salted. For this purpose fine grades of dairy salt are used as free as possible from impurities and consisting of fine particles or crystals which rapidly dissolve in the residual moisture of butter.
