Grocers' Goods / A Family Guide to the Purchase of Flour, Sugar, Tea, Coffee, Spices, Canned Goods, Cigars, Wines, and All Other Articles Usually Found in American Grocery Stores

by Frederick B. Goddard

Butter.

Good, fresh butter, contains 84 to 88 parts of milk fat, 10 or 12 parts of moisture, and a little milk sugar, caseine and salt. inferior butter may contain as much as 33 per cent. of water, or buttermilk, and salt. The more buttermilk left in, the sooner the butter grows rancid, while over-working tends to make it soft and oily. The melting of butter changes its physical properties, and long exposure to the air injures the best butter.

Good butter is solid and of a grained texture, has a fine orange yellow color and a pleasant aroma. It may comfort the curious to know that its odor is due to a very little butyric acid, combined with oxide of lipyle. To test the quantity of moisture, put a little of the butter in a bottle, heat gently, and leave near the fire for half an hour, when the butter will rise, leaving the water and salt at the bottom. Two-thirds of all the butter made is colored.