The Digestibility of Cheese

From "The Book of Cheese", 1918.

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 quantities as an accessory to the diet, and that in large quantities 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.

Calorimeter experiments 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 classed with meat and eggs, not with condiments. An ounce of Cheddar cheese roughly is equivalent to one egg, to a glass 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.

French Camembert

The soft cheeses ripened by molds are French in origin. Their manufacture has spread into Germany, Italy and America. Of the series, the most widely known is Camembert, which will be described as typical for the group. Brie, Coulommiers, Robbiola and Ripened Neufchâtel belong to this series.

The origin of Camembert is given by French authorities as 1791 in the Commune of Camembert near Vimoutiers in Orne, France. From a very restricted production at first, Camembert-making has spread through the region from Caen in the west to Havre, Rouen and a considerable area east of Paris.

In America Camembert began to be made in one factory about 1900. Several other factories followed by 1906. The difficulties and losses encountered led to the abandonment of these undertakings, until at the outbreak of the European war in 1914 but one factory was making Camembert and that only on an experimental scale. Meanwhile the United States Department of Agriculture and the Storrs Experiment Station had taken up and solved, on an experimental basis, most of the problems arising in these commercial failures. A shortage of product at the outbreak of the war brought about the re-establishment of a series of factories. The product as put on the market indicates that a permanent establishment of Camembert-making is entirely practicable.

Camembert cheese is made from cow's milk either whole or very slightly skimmed; the removal of about 0.5 per cent of fat has been found to be desirable if not actually necessary.

These cheeses are made in sizes 2½ to 4½ inches in diameter and 1¼ to 1½ inches in thickness. They are ripened by the agency of molds and bacteria which form a felt-like rind over their whole surface, ⅟16 to ⅛ of an inch in thickness. This rind may be dry and gray or grayish-green, consisting of a felt-like surface of mold on the outside, below which a harder portion consists of mold embedded in partially dried cheese, or the moldy part may be more or less completely overgrown or displaced by yellowish or reddish slime composed mainly of bacteria. Good cheeses may have either appearance.

Inside the rind, the cheese is softened progressively from the rind toward the center from all sides, so that a fully ripe cheese has no hard sour curd in the center, but is completely softened. No mold should be visible inside the rind, but the moldy rind itself is necessary because the ripening is caused by the enzymes secreted by the organisms of the rind into the cheese. As the curd ripens, the changed portion assumes a slightly deeper color than the unripe curd as a result of chemical changes.

Well-ripened cheeses vary from nearly a fluid texture to the consistency of moderately soft butter. The ripening of Camembert is finished in wooden boxes which protect the cheeses from breaking after they become soft and during the market period.

The Water Content of Different Cheeses

From "The Book of Cheese", 1918.

In this table the series of typical dairy products are first arranged according to water-content of the final product. Approximate limits of percentages of milk-fat are also given, because milk-fat frequently affects texture to a degree almost equal to water. Column 4 gives the period within which the more quickly perishable cheeses are usable, and the length of the ripening for the more solid forms. The correlation between water-content, texture and the time of keeping is clearly shown for most varieties.

Variety	Per Cent Water	Per Cent Fat	Period Required	Ripening Agent
Soft:
Cottage	70	trace	a few days	Bacteria
Skim Neufchâtel	70	trace	a few days	Bacteria
Neufchâtel	50-60	12-28	a few days	Bacteria
Camembert	50	22-30	3-5 weeks	Molds
Cream cheese	40-50	35-45	a few days	Primarily   bacteria
Semi-hard:
Limburger	40-45	24-30	3-6 months	Bacteria
Roquefort	38-40	31-34	3-6 months	Mold
Brick	37-42	31-35	3-6 months	Bacteria
Hard:
Cheddar	30-39	32-36	6-12 months	Bacteria
Swiss	31-34	28-31	9-18 months	Bacteria and yeasts
Parmesan	30-33		2-3 years	Bacteria

The soft cheeses are quickly perishable products. Bacteria and molds find favorable conditions for growth in products with 45 to 75 per cent of water. If such growth is permitted, enzymic activities follow quickly with resultant changes in appearance, texture, odor and taste. Refrigeration is necessary to transport such cheeses to the consumer, if properly ripened. Trade in these forms may continue throughout the year in cool climates and in places where adequate refrigeration is available. Practically, however, outside the large cities this trade in America is at present limited to the cold months; inside the large cities much reduced quantities of these cheeses continue to be handled through the year.

In the stricter sense, the soft group of cheeses falls naturally into two series: (1) the varieties eaten fresh; and (2) the ripened soft cheeses. Those eaten fresh have a making process which commonly involves the development of a lactic acid flavor by souring, but no ripening is contemplated after the product leaves the maker's hands. In the ripened series, after the making process is completed, the essential flavors and textures are developed by the activity of micro-organisms during ripening periods varying in length but fairly well-defined for each variety.

In contrast to the soft cheeses, the hard kinds are low in water-content, ripen more slowly and may be kept through much longer periods. They retain their form through a wider range of climatic conditions. They develop flavor slowly and correspondingly deteriorate much more slowly. Such cheeses are in marketable condition over longer periods. In their manufacture the cooking of the curd takes a prominent place.

How American Cheddar Cheese is Made

From "Woman's Institute Library of Cookery, Vol. 2"
 
Since American Cheddar cheese is the kind that is commonly used in this country, the way in which it is made will be well to know. The milk used for this kind of cheese is first inspected as to cleanliness and the extent of fermentation it has undergone, and when these points are ascertained, it is ripened; that is, allowed to sour to a certain degree of acidity.

At this stage, coloring matter is added, after which the milk is prepared for setting by bringing it to a certain temperature. With the temperature at the right point, rennet is added to coagulate the milk, or form the curd. The milk is then allowed to remain undisturbed until the action of the rennet is at a certain point, when the curd is cut into little cube-shaped pieces by drawing two sets of knives through it and thus is separated from the whey.

As soon as the curd is cut, the temperature of the mass is raised to help make the curd firm and to cause the little cubes to retain their firmness, and during the entire heating process the whole mass is stirred constantly to assist in the separation from the whey. When the curd is sufficiently firm, the whey is removed and the particles of curd are allowed to adhere and form into a solid mass. If necessary, the curd is cut again into small pieces to get rid of the excess whey; but if the curd is too dry, the pieces must be piled up until they are four or five deep.

During this process, which is known as the cheddaring of the cheese, the curd is treated until it is of the proper texture to be milled, that is, put into a mill and ground into small pieces. The object of milling the curd is to cut it into pieces small enough to permit of uniform salting and the further escape of whey. When the curd has been brought to this point, it is salted and then pressed into molds.

Finally, it is wrapped and cured, or ripened.

Pineapple Cheese

Pineapple cheese is named after its shape rather than its flavor, although there are rumors that some pineapple flavor is noticeable near the oiled rind. This flavor does not penetrate through to the Cheddar center. Many makers of processed cheese have tampered with the original, so today you can't be sure of anything except getting a smaller size every year or two, at a higher price. Originally six pounds, the Pineapple has shrunk to nearly six ounces. The proper bright-orange, oiled and shellacked surface is more apt to be a sickly lemon.

Always an ornamental cheese, it once stood in state on the side-board under a silver bell also made to represent a pineapple. You cut a top slice off the cheese, just as you would off the fruit, and there was a rose-colored, fine-tasting, mellow-hard cheese to spoon out with a special silver cheese spoon or scoop. Between meals the silver top was put on the silver holder and the oiled and shellacked rind kept the cheese moist. Even when the Pineapple was eaten down to the rind the shell served as a dunking bowl to fill with some salubrious cold Fondue or salad.

Made in the same manner as Cheddar with the curd cooked harder, Pineapple's distinction lies in being hung in a net that makes diamond-shaped corrugations on the surface, simulating the sections of the fruit. It is a pioneer American product with almost a century and a half of service since Lewis M. Norton conceived it in 1808 in Litchfield County, Connecticut. There in 1845 he built a factory and made a deserved fortune out of his decorative ingenuity with what before had been plain, unromantic yellow or store cheese.

Perhaps his inspiration came from cone-shaped Cheshire in old England, also called Pineapple cheese, combined with the hanging up of Provolones in Italy that leaves the looser pattern of the four sustaining strings.

Sicilian Pizza Recipe

Pizza—The Tomato Pie of Sicily

DOUGH

1 package yeast, dissolved in warm water
2 cups sifted flour
1 teaspoon salt
2 tablespoons olive oil

Make dough of this. Knead 12 to 20 minutes. Pat into a ball, cover it tight and let stand 3 hours in warm place until twice the size.

TOMATO PASTE

3 tablespoons olive oil
2 large onions, sliced thin
1 can Italian tomato paste
8 to 10 anchovy filets, cut small
½ teaspoon oregano
Salt
Crushed chili pepper
2½ cups water

In the oil fry onion tender but not too brown, stir in tomato paste and keep stirring 3 or 4 minutes. Season, pour water over and simmer slowly 25 to 30 minutes. Add anchovies when sauce is done.

CHEESE

1/2 cup grated Italian, Parmesan, Romano or Pecorino, depending on your pocketbook

Procure a low, wide and handsome tin pizza pan, or reasonable substitute, and grease well before spreading the well-raised dough ½ to ¾ inch thick. Poke your finger tips haphazardly into the dough to make marks that will catch the sauce when you pour it on generously. Shake on Parmesan or Parmesan-type cheese and bake in hot oven ½ hour, then 1/4 hour more at lower heat until the pizza is golden-brown. Cut in wedges like any other pie and serve.

The proper pans come all tin and a yard wide, down to regular apple-pie size, but twelve-inch pans are the most popular.

Cheese Souffle

3 Tb. butter
4 Tb. flour
1-1/4 c. milk
3/4 c. grated cheese
Dash of paprika
1/2 tsp. salt
3 eggs

Melt the butter, add the flour, mix well, and then gradually add the milk, which should be scalded. To this sauce add the cheese, paprika, and salt. When thoroughly mixed, remove from the fire and add the beaten yolks of eggs, beating rapidly. Cool and fold in the stiffly beaten whites of the eggs. Pour into a buttered baking dish or in ramekins and bake 20 minutes in a slow oven. Serve at once.

As a dish that will take the place of meat in a light meal is often desired, cheese soufflé, which is comparatively high in food value, finds much favor. This dish contains milk, eggs, and cheese, as is shown in the accompanying recipe, and so may actually be considered as a protein dish and used accordingly. Soufflé is served in the dish in which it is baked, but if it is quite firm and is to be eaten at once, it may be removed from the ramekin to a plate.

(Sufficient to Serve Six)

From "The Woman's Institute Library of Cookery, Volume 2"