Likewise, if a hearty meal has been eaten and before this has had time to digest a lunch is made of fruit and milk, trouble may ensue. All the foods may be good, but a time must come when the body will object to being overfed. In summertime much less food is needed than during the cold months. Nevertheless, barring the Christmas holidays and Thanksgiving, people overeat more in summer than at any other time of the year. Picnics often degenerate into stuffing matches. We should expect many cases of serious illness to follow them, and such is the case.
Sometimes the milk is so carelessly handled that it becomes poisonous and at other times the fruit is tainted, but generally bad combinations and overeating are the factors that cause trouble when the fruit and milk combination is blamed.
Buttermilk and clabbered milk are more easily digested by many than is the fresh milk. In Europe sour milk is a more common food than in this country. Here many do not know how excellent it is. Two glasses of milk, or less, make a good warm-weather lunch.
Those who have a tendency to be bilious should use cream very sparingly. Bilious people always overeat, otherwise their livers would not be in rebellion. The fat, in the form of cream, arouses decided protest on the part of overburdened livers.
A theory has found its way into dietetic literature, sometimes disguised as a truth, to the effect that boiled or hot milk is absorbed directly into the blood stream without being digested. This is contrary to everything we know about digestion and assimilation, and although it is a fine enough theory it does not work out in practice. I have seen bad results when nothing but a small amount of the hot milk was fed to patients with weak digestive power. Perhaps others have had better results. When the system demands a rest from food, nothing but water should be given. Boiled or natural milk is then as bad as any other food, and worse than most, for in the absence of digestive power it soon becomes a foul mass, swarming with billions of bacteria. The system is compelled to absorb some of the poisons given off by the micro-organisms and the results are disastrous.
Every food we take must be modified by our bodies before entering the circulation, and milk is no exception.
When milk is allowed to stand for a while the sugar ferments, through the action of the lactic acid bacteria. The sugar is turned into lactic acid, which combines with the casein and when this process has continued for a certain length of time the result is clabbered milk or sour milk. The length of time varies with the temperature and the care given the milk. If milk remains sweet for a long time during warm weather, discharge the milkman and patronize one whose product sours more quickly, for milk that remains sweet has been subjected to treatment. All kinds of preservative treatment cause deterioration. If extraordinary care is taken with the milk and it is kept at a temperature of about forty-two degrees Fahrenheit, it may remain sweet five or six weeks, provided it is not exposed to the air, but such care is at present not practicable in commercial dairies. The milk contains unorganized ferments which spoil it in time without exposure to bacterial influences. These ferments cause digestion or decay of the milk.
Fresh butter is a palatable form of fat, which digests easily. Like all other milk products, it must be kept clean and cold, or it will soon spoil. Butter absorbs other flavors quickly and should therefore not be placed near odorous substances. It is best unsalted and in Europe it is very commonly served thus. When people learn to demand unsalted butter they will get good butter, for no one can palm off oleomargarine or other imitations under the guise of fresh unsalted butter. Unsalted butter must be fresh or it will be refused by the nose and the palate. Salt and other preservatives often conceal age and corruption of foods.
Butter combines well with starches and vegetables, in fact, it can be used in moderation with any other food, when the body needs fat. Butter should not be used to cook starches or proteins in. Greasy cooking should be banished from our kitchens.
Milk is a complex food, highly organized, and therefore is easily injured or spoiled. The general rule is that the more complex a food is, the more easily it spoils. It is rather difficult at present to get wholesome milk enough to supply the people of our large cities. When it is boiled, the milk keeps longer, but boiled milk is spoiled milk. The fine flavor is lost, the casein, which is the principal protein of milk, is toughened, the milk, which is normally a living liquid, is killed, the chemical balance is lost, the organic salts being rendered partly inorganic. Milk that is unfit to eat without being boiled is not fit to eat afterwards, for the poisonous end products of bacterial life remain.