"In order to judge the value of foods fairly not only the protein but the energy also must be compared. To supply energy cheese is one of the best of food products. On the basis of energy supplied, 1 pound of cheese equals--
1.98 pounds of sirloin steak.
2.61 pounds of round steak.
2.52 pounds of fowl.
1.17 pounds of smoked ham.
1.29 pounds of fresh ham."
All these discussions have applied to whole-milk Cheddar cheese. With minor reductions, much the same figures will hold for Swiss, Limburger, Brick, Munster, Edam.
On the other hand, very little has been published until recently on the skimmed-milk cheeses. The food value lost in skimmed-milk has at times been enormous. Many households purchase milk by the bottle, use the top-milk as cream and lose a part of the remainder. Similarly creameries have wasted tons of skimmed-milk. The recovery of the protein of this milk for human food is both good economy and an important addition to the dietary. The United States Department of Agriculture has recently published the following: "Cottage cheese is richer in protein than most meats and is very much cheaper. Every pound contains more than three ounces of protein, the source of nitrogen for body building. It is a valuable source of energy also, though not so high as foods with more fat. It follows that its value in this respect can be greatly increased by serving it with cream, as is so commonly done."
It is an open question whether the decline of cheese-making in America is not due to our failure to develop the use of skim and part-skim cheeses. The whole-milk cheeses are very rich in fat. Use of such cheese in quant.i.ty in connection with ordinary foods quickly leads to the ingestion of too much fat. The skimmed-milk cheeses are primarily protein food and as such subst.i.tutes for lean meat.
"The following table shows that cottage cheese is much cheaper than most meats in furnishing protein for the diet.
"For supplying protein, one pound of cottage cheese equals:
1.27 pounds sirloin steak.
1.09 pounds round steak.
1.37 pounds chuck rib beef.
1.52 pounds fowl.
1.46 pounds fresh ham.
1.44 pounds smoked ham.
1.58 pounds loin pork chop.
1.31 pounds hind leg of lamb.
1.37 pounds breast of veal.
"In addition to protein, energy for performing body work must be furnished by food. As a source of energy also, cottage cheese is cheaper than most meats at present prices. The following table shows the comparison when energy is considered.
"On the basis of energy supplied, one pound of cottage cheese equals:
8-1/3 ounces sirloin steak.
11 ounces round steak.
11 ounces chuck rib beef.
10 ounces fowl.
5 ounces fresh ham.
5 ounces smoked ham.
6 ounces loin pork chop.
7-1/3 ounces hind leg of lamb.
12 ounces breast of veal."
+335. Digestibility of cheese.+--Although it has been a staple food with many races for uncounted years, there is a widespread belief that cheese is suitable for use chiefly in small quant.i.ties as an accessory to the diet, and that in large quant.i.ties it is likely to produce physiological disturbances. The question of digestibility was made the subject of a special investigation by the United States Department of Agriculture.[147] Calorimeter experiments[148] were made to test the digestibility of several varieties of cheese and some of these varieties at various stages of ripening. All forms of cheese were found to be digested as completely as most of the usual forms of food. Approximately 90 per cent of the nitrogenous portion (casein) was retained in the body. Unripe cheese in these experiments was apparently digested as completely as the ripened forms. These experiments make clear the possibility of making cheese a more prominent article in the regular dietary than is usual in America. They especially point to the desirability of the use of the skim and partially skim cheeses, which as cheap sources of protein when properly combined with other foods, may be made to replace meats as a less costly source of proteins. Cheese is then to be cla.s.sed with meat and eggs, not with condiments. An ounce of Cheddar[149] cheese roughly is equivalent to one egg, to a gla.s.s of milk, or to two ounces of meat. It is properly to be combined with bread, potatoes and other starchy foods, lacking in the fat in which the cheese is rich. These experiments included Roquefort, fresh-made and ripe Cheddar, Swiss, Camembert and Cottage cheese.
+336. Cheese flavor.+--"Cheese owes its flavor to the fatty acids and their compounds which it contains and to ammonia-like bodies formed during ripening from the cleavage of the casein, to salt added to the curd, and in some varieties, like Roquefort, to bodies elaborated by molds which develop in the cheese. In the highly flavored sorts some of the fatty acids of a very marked odor are present in abundance, as are also the ammonia-like bodies. Indeed, in eating such cheese as Camembert a trace of ammonia flavor may often be plainly detected.
"The cleavage of the nitrogenous material of the cheese and other changes are brought about chiefly by the action of enzymes originally present in cheese or by micro-organisms and are to be regarded as fermentative and not as putrefactive changes.
"The liking for highly flavored cheeses of strong odor is a matter of individual preference, but from the chemist"s standpoint there is no reason for the statement often made that such cheeses have undergone putrefactive decomposition."
+337. Relation to health.+--In connection with the use of cheese as a food, its relation to the health of the consumer must be considered. The presence of the bacillus of tuberculosis in milk has led to careful study of its possible presence in cheese. When American Cheddar cheese was specially inoculated for this purpose, the living organism was recovered from it after about five months by Schroeder of the United States Department of Agriculture. This danger is much greater from cheeses, such as Cream and Neufchatel, which are eaten when comparatively freshly made. The disease has been produced in guinea pigs from such cheese often enough to emphasize the desirability of developing methods of making every variety possible from thoroughly pasteurized milk. This would remove the danger of tuberculosis and with it eliminate the possibility of transmitting other diseases.
+338. Cheese poisoning+[150] cases occasionally occur. These take two main forms: (1) an enteritis (caused by _Bacillus enteritidis_) or some other member of that series which while painful and accompanied by purging is rarely fatal; (2) acute toxaemias which, although rare, usually result in death. From the latter type a variety of _Bacillus botulinus_, an organism usually a.s.sociated with meat poisoning, was isolated by the New York State Department of Health. The occurrence of such cases is frequent enough to emphasize the desirability of using every precaution to reduce the number of bacteria that are allowed to enter milk when drawn and to prevent the development of those which actually gain access to it. When possible, pasteurization should be introduced.
+339. Proper place in the diet.+--It has already been noted that cheese is used "in general in two ways--in small quant.i.ties chiefly for its flavor and in large quant.i.ties for its nutritive value as well as for its flavor. Some varieties of cheese are used chiefly for the first purpose, others chiefly for the second. Those which are used chiefly for their flavor, many of which are high priced, contribute little to the food value of the diet, because of the small quant.i.ty used at a time.
They have an important part to play, however, in making the diet attractive and palatable. The intelligent housekeeper thinks of them not as necessities, but as lying within what has been called "the region of choice." Having first satisfied herself that her family is receiving sufficient nourishment, she then, according to her means and ideas of an attractive diet, chooses among these foods and others which are to be considered luxuries.
"Those cheeses, on the other hand, which are suitable to be eaten in large quant.i.ties and which are comparatively low priced are important not only from the point of view of flavor, but also from the point of view of their nutritive value." Among such cheeses are American Cheddar, Swiss, Brick, Limburger and the lower priced forms of Neufchatel.
It is clear that in buying cheese, the housekeeper should know definitely the dietary purpose of the purchase, and then choose the variety of cheese best suited. To a very large degree the personal tastes of the family determine the kinds of cheese which will be tolerated when served uncooked. In some families, the strong flavors of Roquefort or Limburger are not acceptable. However, there is a range of choice in which much judgment can be used. Cheese to be served with mild-flavored foods should as a rule be also mild-flavored. For most sandwiches, for example, Cheddar or Swiss is usually very acceptable; Brick or partly ripe Limburger still hard enough to slice cuts into thin rectangular slices and is very attractive to many consumers because it has somewhat more flavor without being too strong. With proper handling it is good policy to buy the cheapest of these forms for this purpose.
The selection of dessert cheeses offers the widest range. If served with mild-flavored crackers, very many persons prefer Cream, Neufchatel or mild Cheddar; a little stronger taste calls for club cheese, or Camembert. If tobacco smoke is present, Roquefort, Gorgonzola, Limburger and related types will satisfy many consumers better than mild cheeses.
The intensity of flavor to be sought in the cheese should thus be adjusted to the food served with it. A person with an aversion to strong-smelling or strong-tasting cheese has been frequently known to approve over-ripe Camembert, or Limburger when served without label but spread upon a ginger cracker.
For cooking purposes, some recipes prescribe cheese of special quality.
In large markets, old Cheddar ripened carefully for two or three years is commonly purchasable for Welsh rabbit. (Ask for "rabbit" cheese.) An expert housekeeper familiar also with cheese ripening has demonstrated that almost any cheese, whether ripened to its best, part ripe or over-ripe, can be used in many cooking formulas without injuring the acceptability of the product to most consumers. In canning Camembert, it has been shown[151] that over-ripe cheese so strong as to be objectionable, when sterilized loses the objectionable flavor of the raw product. No cheese should be wasted; any not used when served the first time should be served at a closely following meal or used in cooking. No matter what the variety, it will add to the food value and palatability of some one of the common dishes served within forty-eight hours.
+340. Care of cheese.+[152]--"One of the best ways of keeping cheese which has been cut is to wrap it in a slightly damp cloth and then in paper, and to keep it in a cool place. To dampen the cloth, sprinkle it and then wring it. It should seem hardly damp to the touch. Paraffin paper may be used in place of the cloth. When cheese is put in a covered dish, the air should never be wholly excluded, for if this is done, it molds more readily.
"In some markets it is possible to buy small whole cheeses. These may be satisfactorily kept by cutting a slice from the top, to serve as a cover, and removing the cheese as needed with a knife, a strong spoon, or a cheese scoop. It is possible to buy at the hardware stores k.n.o.bs which inserted in the layer cut from the top make it easy to handle.
The cheese with the cover on should be kept wrapped in a cloth."
+341. Food value and price.+--There is little relation between the price and food value of standard varieties of cheese. The higher-priced varieties claim and hold their place because they possess particular flavors. These may or may not accompany high comparative food values.
Even among low-priced varieties discrimination into grades is largely based on flavor. Of the low-priced cheeses, those made from skimmed-milk commonly command the lowest prices. As noted above, a choice may be based either on purpose or on price. If the purpose is fixed, the price should not change the selection. If, however, a particular quality of cheese is purchasable at a low price, some satisfactory form of utilizing it is clearly available to the housekeeper. Some standard recipes are given in the following paragraphs.
+342. Methods and recipes for using cheese.+--(1) As a meat subst.i.tute.
Meat is wholesome and relished by most persons, yet it is not essential to a well-balanced meal and there are many housekeepers who for one reason or another are interested in lessening the amount of meat or to subst.i.tute other foods. The problem with the average family is undoubtedly more often the occasional subst.i.tution of other palatable dishes for the sake of variety, for reasons of economy, or for some other reason than the general replacement of meat dishes by other things.
Foods which are to be served in place of meat should be rich in protein and fat and should also be savory. Cheese naturally suggests itself as a subst.i.tute for meat, since it is rich in the same kinds of nutrients that meat supplies, is a staple food with which every one is familiar and is one which can be used in a great variety of ways. In subst.i.tuting cheese for meat, especial pains should be taken to serve dishes which are relished by the members of the family. A number of recipes[153] for dishes which contain cheese are given below. They are preceded by several recipes for cheese sauces which, as will appear, are called for in the preparation of some of the more substantial dishes. In the first list of recipes, cheese means Cheddar.
Cheese Sauce No. 1
1 cupful of milk.
2 tablespoonfuls of flour.
1 ounce of cheese ( cupful of grated cheese).
Salt and pepper.
Thicken the milk with the flour and just before serving add the cheese, stirring until it is melted.
This sauce is suitable to use in preparing creamed eggs, or to pour over toast, making a dish corresponding to ordinary milk toast, except for the presence of cheese. It may be seasoned with a little curry powder and poured over hard-boiled eggs.
Cheese Sauce No. 2
Same as cheese sauce No. 1, except that the cheese is increased from 1 to 2 ounces.
This sauce is suitable for using with macaroni or rice, or for baking with crackers soaked in milk.
Cheese Sauce No. 3