Skim milk

“ The half-skimmed milk left when the top-milk has been removed after 3 to 6 hours’ setting will still contain 2% or more of butter-fat and is very good for drinking; even the skim milk from which the cream has been taken after 12 hours’ setting is still an excellent beverage, provided it is sweet. Perfectly skimmed, almost entirely fatless, milk may be used in various ways in cooking, to make up for lack of protein in many other food products. But care must be taken that it is pure and sweet, or rather, its condition, sweet or sour, must be under the perfect control of the housekeeper. ”

“ Milk contains specifics for growth. Experiments with animals have taught us that there are two specific substances, known as vitamines, which must be present in the diet if a young animal is to grow. If either one is absent, growth is impossible. Both are to be found in milk, one in the cream and the other in the skim milk or whey. For this reason children should have whole milk rather than skim milk. Of course, butter and skim milk should produce the same result as whole milk. ”

“ Sometimes it is spread on the breakfast slice of bread instead of butter or jam. An inexperienced visitor probably suggests that it would make a good milk pudding, but is silenced by hearing that it would take half a tin to make one pudding, and then there is no richness in it. Some people have suggested skim milk as a way round this very terrible deprivation of the hard-working poor. But skim milk does not take the place of whole milk as a food for infants. Parents who are comfortably off would never dream of starving their infants upon it. ”

“ For sty-fed pigs the washings of the dairy, as butter and skim-milk, whey, &c., are excellent, and especially whey thickened with barley, or oat, or pea-meal, whey being more nourishing than skim-milk; the animals thrive and make flesh so well on it, that many farmers are of opinion that this mode of employing their sour milk is more profitable than making cheese. But when the swine have once become habituated to this kind of diet it must be continued, as they would fall off if put upon any other. ”

“ Ordinary milk cannot be kept good for a long time, especially in hot weather. If milk were concentrated in this country, and heated with the boroglyceride, carriage would be saved, and the milk might be kept good and fresh for a fortnight and more; all it would require would be to reduce it again to its original strength. If fresh milk be treated with this preservative it can be set for cream for several days, even in hot weather. The cream which rises will keep, and the skim-milk will remain sweet for several weeks; this I have tried in the dairy at Beaumont College. ”

“ Eight quarts of milk will, therefore, make about one quart of cream. But the milk of cows that are fed so as to produce the richest milk and butter will often very far exceed this, sometimes giving over twenty per cent. of cream, and in very rare instances twenty-five or twenty-six per cent. The product of milk in cream is more regular than the product of cream in butter. A very rich milk is lighter than milk of a poor quality, for the reason that cream is lighter than skim-milk. ”

“ But it has proven good business because in many cases and places skim milk powder and butter keep better separately or can be shipped at long distance to better advantage than new milk or cream or condensed milk. In ice cream factories business may be dull in cold weather and cream is perhaps not provided and not available, when suddenly a hot spell brings orders for large quantities. With a stock of skim milk powder and butter on hand in the refrigerator, and an emulsifier to mix these products, cream can be produced on short notice and there will be no danger of shortage. ”

“ No other breed equals her in yield of milk. Her milk is of average richness, and she gives so much of it that it makes her valuable as a butter cow. Microscopists say the fat globules in her milk are very small. This makes it somewhat difficult to separate the fats from the milk for the purposes of butter making. Though the fat globules are quite uniform in size, it requires a long time to raise the [21] cream by the ordinary methods, and the separation is not complete; but this makes the skim-milk all the more valuable for cheese making, feeding, or to market. ”

“ In the hospital or in the home it serves as a substitute for milk when a mild diet of easily digested food is temporarily required for a weak stomach. For such purposes it must not be allowed to become acid as in cheesemaking, but should be prepared as the chief product from sweet new milk or freshly separated skim milk. The sweet milk is set with rennet—one Junket Tablet, dissolved in cold water, to a quart of milk—at a temperature of 90° to 100° F. As soon as a firm curd is formed it is carefully broken up and transferred to a strainer of cheese-cloth. ”

“ The most efficient separators remove nearly the whole of the butter-fat, the quantity of fat left in the separated milk falling in some cases to as low as 0.1. When cream is raised by the deep-setting method, from 0.2 to 0.4% of fat is left in the skim-milk; by the shallow-setting method from 0.3 to 0.5% of the fat is left behind. As a rule, therefore, “separated” milk is much poorer in fat than ordinary “skim” milk left by the cream-raising method in deep or shallow vessels. ”

“ The skim milk, being heavier, is thrown to the outside, and passes off through a tube which rises from a point in the skim milk where the least amount of fat exists to the upper edge of the drum; while the lighter cream rises near the center of the drum and passes off through another hole, coming out of the separator on the opposite side from the skim milk. One or two thousand pounds of milk an hour may be creamed with this machine, when run by horse or steam power. ”

“ They usually wear a smock frock, and have the cans and yoke used by the regular milk-sellers; they are not itinerant. The skim milk—for they sell none else—is purchased at the dairies at 11⁄2d. a quart, and even the skim milk is also further watered by the street-sellers. Their cry is “Half-penny half-pint! Milk!” The tin measure however in which the milk-and-water is served is generally a “slang,” and contains but half of the quantity proclaimed. The purchasers are chiefly boys and children; rarely men, and never costermongers, I was told, “for they reckon milk sickly.” ”

“ Another method that has met with wider acceptance, especially in creameries, is the custom of pasteurizing or scalding the skim-milk immediately after it is separated, so that it is returned to the farmer in a hot condition. In factories where the whole milk is pasteurized, further treatment of the by-product is not necessary. In most factories steam, generally exhaust, is used directly in the milk, and experience has shown that such milk, without any cooling, will keep sweet for a considerable number of hours longer than the untreated product. ”

“ In pig feeding in the dairy districts, young pigs generally grow up in a very healthy condition, owing to the refuse milk of the dairy, which furnishes the principal food of young pigs. Skim-milk contains all the elements for growing the muscles and bones of young pigs. ”

“ DUET—LITTLE BUTTERCUP and CAPTAIN BUT, Things are seldom what they seem, Skim milk masquerades as cream; ”

“ If you have no cellar that can be kept warm and free from the smell of vegetables, set your milk on a shelf, in a warm closet, where, of course, you will keep no vegetables or meats, as nothing is so easily impregnated with odors of all kinds as milk. Cover the pans or bowls with a fine net, to exclude dust or motes of any kind.
Thirty-six hours is as long as milk should remain unskimmed, summer or winter. Every hour longer, even though the milk may taste sweet, is insuring bitter butter. As you skim off the cream, stir it well each time. ”

“ Skimmed milk contains the principle part of the nitrogenous constituents of milk, the greater quantity of its sugar and a very large quantity of its mineral matter. It is still a very valuable food product, lacking only the element of fat. When eaten with nuts or other oily food skimmed milk would complete the ration and make a well balanced food. The chief prejudice against skimmed milk is that it has been so often sold for whole milk. When sold and consumed under its own name it is not a fraudulent body and is deserving of a higher place in the dietary than has been ascribed to it. ”

“ It is a matter of great importance that the dairy should not be situated near a pig-stye, sewer, or water-closet, the effluvia from which would be likely to taint the milk. It is surprising how small a quantity of putrescent matter is sufficient to taint a whole churn of milk; and as it has been demonstrated that the almost inappreciable emanations from a cesspool are capable of conferring a bad flavor on milk, it is in the highest degree important to remove from the churn and milk-pail every trace of the sour milk. ”

“ Cream contains about 40 per cent. of fat and 55 per cent. of water; SKIMMED MILK is water, with sugar and caseine. Whey is merely a solution of milk sugar with a little albumen. Milk is best and most plentiful in spring, and richer but less abundant in dry seasons. The last milk drawn from the cow contains most cream. Koumiss, the use of which is rapidly increasing, is well skimmed milk, treated with a lactic ferment for 30 or 40 hours. It is very easy of digestion. Condensed milk is ordinary milk evaporated so that three pints are reduced to one. It soon spoils unless the air is excluded. ”

“ In order to modify or “humanize” cow’s milk so as to make its composition nearly the same as that of mother’s milk, simple dilution with water is therefore not sufficient.
There are, however, various other methods which may be used to advantage. For instance, top-milk from a bottle of fresh milk which has stood 4 or 6 hours in ice water will contain 6 to 8% of fat. By diluting this with an equal part of water, the percentage of protein, fat and mineral matter will be about right, and sugar, either cane-sugar or milk-sugar, may be added to supply the carbohydrates. ”

“ The dry milk powders, including malted milk, are, from their nature, deficient in fats and contain a large excess of sugar, which is harmful because of the readiness with which it undergoes fermentation. As for the condensed milks, during a recent examination of the milk supply of London, seventeen brands were examined; fourteen of these were found to have been prepared entirely from skimmed milk, and showed an average of only 0·72 per cent of fat. Genuine full-cream brands of condensed milk contain from ten to twelve per cent of fat. ”

“ By diluting with water to reduce the protein and salts, and adding sugar and a little cream, the proportions of these different substances may be made to approximate those in mother's milk. In both the sugar is the same—lactose, or milk-sugar; the fats are also much alike in each; but the albuminous matter of cow's milk differs somewhat from that of human milk, particularly in the way in which it coagulates in the presence of acids. Human milk forms into small, light, feathery curds; cow's milk into large, compact, not so easily digested masses. ”

“ In very warm weather, with no more protection than is generally found in small dairies, it is not often possible to keep milk over twenty-four hours before skimming. Every minute the cream remains on the milk, after it changes, is an injury to the butter. Thirty-six hours is the proper time for milk to stand, when the weather is cool enough to keep it sweet. ”

“ It is then ready to strain through two thicknesses of cheese-cloth and care must be taken to squeeze well so as to obtain as much of the whey as possible, which is very important. Add one tablespoonful of sugar to sweeten. Pour into nursing bottles, the amount being according to the age of the baby. A sufficient number of bottles are prepared for 24 hours’ feeding. Care should be taken to keep the milk in a cool place as it will sour the same as fresh milk. Every time the baby is fed the milk must be warmed by placing the bottle in a pan of water and heating to the right temperature. ”

“ We figure that a herd of twenty Holstein cows ought to average two hundred quarts of milk daily. This would mean ten twenty-quart cans to take care of the milk, and, allowing for the ice, would require a trough nine feet by two feet six inches by two feet. If we separate the cream, of course, it wouldn't require such a large trough. But we used this as a basis of the dairy requirements. ”

“ Awful stories are told about the London milkmen, who are said to manufacture a fearful kind of medicine to be sold as milk, the cream being made of a quantity of calf’s brain beaten to a slime. Stories are told around New York, too, of a mysteri [154] ous powder sold by druggists, which with water makes milk; but it is milk that must be used quickly, or it turns into a curious mess. But the worst adulteration of milk is to adulterate the old cow herself; as is done in the swill-milk establishments which received such an exposure a few years ago in a city paper. ”

“ Skimming should be attended to when the milk has soured just enough to have a little of it curdle on the bottom of the pan. If it should nearly all curdle, it would not be a serious injury, unless it should become old. If you have not conveniences for keeping milk sufficiently warm in cold weather, place it over the stove at once, when drawn, and give it a scalding heat, and the cream will rise in a much shorter space of time, and more plentifully. ”