In cake mixing, the yolks and the whites of the eggs are often separated. When this is done, the yolks and sugar are blended, the moisture, flavoring, melted fat, and dry ingredients are added, the mixture beaten, and finally the beaten whites are folded in.
In combining cake ingredients, great care must be taken to mix all ingredients thoroughly. Cakes, except those containing very little moisture and much fat, such as Jumbles or Pound Cake, can be made satisfactorily by adding melted fat. It has been estimated that half as much time is required for mixing a cake in which melted fat is used as one in which the fat is creamed. It has been found [Footnote 114: See Journal Home Economics, Vol. X, pp. 542-7, December, 1918.] that the amount of mixing and the preparation of ingredients in a cake are much more important factors than the manner of combining the ingredients. Too little beating makes a cake of coarse, crumbly mixture. Too much beating makes it compact in texture with "tunnels" through it.
PREPARING THE PANS FOR CAKES CONTAINING FAT.—The pans for cakes that contain fat should be well oiled. It is well to line the pans with paper and to oil the paper thoroughly, or to oil the pans well and to sprinkle a little flour over them before adding the cake batter.
BAKING LAYER AND LOAF CAKES.—If a bit of flour or white paper is delicately browned after being placed for 2 minutes in the oven, the oven is of proper temperature for layer cakes containing fat. For a loaf cake the oven should be cooler, since a longer time for baking is required. It is especially important that a crust does not form over the top of a cake before the cake has risen, or before it has been in the oven one fourth of the time required (see Baking Sponge Cakes). To avoid this, the temperature of the oven should be quite low when a thick loaf cake is first placed in it. Some housekeepers find it most satisfactory to cover the top of a pan containing loaf cake with paper until the cake has risen. In general, layer cakes require 20 to 35 minutes for baking and loaf cakes from 40 minutes to 1 1/2 hours. Shortly after taking from the oven, cake containing fat may be removed from the pan, and placed on a wire cake cooler or towel until cold. In a heat-regulated oven, bake layer cakes at 375 degrees F., and loaf cakes at 350 degrees F.
THE QUALITY OF CAKE.—Desirable cake is tender and light, but of fine grain. The quantity of eggs, sugar, fat, and moisture affects these qualities. Too much sugar makes a cake of coarse grain and of waxy or tough texture. On the other hand, a cake containing too little sugar is not as fine grained as one having "just enough."
A cake in which there is too much fat is crisp or crumbly,—i.e. it will not hold its shape. Too little fat may make it tough in texture. Generally the more fat a cake contains the smaller the quantity of moisture needed. Note that the One-egg Cake recipe contains 1 cupful of liquid, but when the fat is increased to 1/2 cupful, the moisture is decreased to 2/3 cupful (see Plain Cake recipe).
Many eggs without a proportionate quantity of fat and sugar produce a tough cake. The toughness occasioned by eggs, may be offset, of course, by the tenderness produced by fat. It is a most interesting study to compare cake recipes. Some are well proportioned, others could be greatly improved by variations in the quantity of ingredients.
The flavor of a cake is largely affected by the proportion of ingredients in a cake. For the sake of economy, however, certain ingredients, especially fat and eggs, must be decreased even though texture, grain, and flavor are sacrificed. The matter of wholesomeness must also be taken into consideration. Many persons can eat with comfort plain cakes, i.e. those containing little fat and a moderate quantity of sugar, while rich cakes distress them.
SCORE CARD FOR CAKE,—DETERMINING ITS QUALITY
Flavor 40
Lightness 20
Grain and texture 15
Baking (crust and color) 15
Appearance (shape and icing) 10
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Total 100