FoodNet

A textbook of domestic science for high schools

1913

Page 62

Presented as published in 1913. Historical recipes may not meet modern food-safety standards. Cook from the modern interpretation, not the original instructions.
Scald oatmeal with boiling water, add lard, sugar, and salt, and when lukewarm the dissolved yeast. Add flour to make a dough stiff enough so that the spoon will stand upright in it. Beat well as the flour is added. Let rise 2 to 3 hours or until it doubles in size. Beat down, put into greased bread pans, let rise about \ hour or until light. Bake 1 hour in a moderate oven. To Ascertain the Cost of Bread : Price of pastry flour (winter wheat) Price of bread flour (spring wheat) Price of bread flour per pound Number of pounds required to make recipe for white bread Cost of other ingredients Total cost Number of loaves made Cost per loaf Weight of loaf Cost per loaf of baker's bread Weight of loaf of baker's bread CHAPTER XV FATS — FRYING, AND PASTRY Sources of fat. 1. Adipose tissue of animals, as beef fat, suet, etc. 2. Bone marrow. 3. Milk. Fat globules are held in suspension in the milk serum. (See Milk, page 108.) 4. Some vegetables. Some vegetables contain a small amount of fat, but they do not form an important source of fat in the diet. 5. Some fruits and seeds. The olive is an important source of fat, furnishing olive oil. The seed of the cotton plant furnishes an important commercial oil, cottonseed oil. 6. Nuts. Nuts contain a large amount of fat. The oil of peanuts and cocoanuts furnish important commercial forms of oil. Fats are composed of carbon, hydrogen, and oxygen. They contain a larger amount of carbon and hydrogen than do carbohydrates, hence have a greater fuel value. CARBON HYDROGEN OXYGEN Carbohydrates .... Fats 44.4% 765% 6.2% 11 9% 49.4% 11.5% One pound of fat yields approximately two and one fourth times as much heat and energy as one pound of car- bohydrates, hence forms a valuable food in cold climates. 143 144 DOMESTIC SCIENCE Fats are composed of fatty acids and glycerine. Among the fatty acids are : 1. Stearic acid of stearin. 2. Palmatic acid of palmatin. 3. Oleic acid of olein. One or more of these acids are found in all fats in combina- tion with glycerine. The fatty acid which predominates gives the characteristic to the fat. Fats may be split up into fatty acids and glycerine by (1) Being heated in very hot steam. stearin glycerine stearic acid (C17H3502)3C3H5 + 3H20 = C3H5(OH)3 + 3C17H35COOH (2) Bacterial action, as when fats become rancid. (3) Action of fat-splitting enzymes of the digestive fluids. (4) Action of strong alkalies, as in soap making. (5) Action of high temperature, as in frying. Fats are insoluble in water, but are soluble in ether, chloroform, gasoline, etc. To remove grease spots from clothing, moisten the spot with any of the above solvents and rub lightly until dry. The solvent will dissolve the grease and thus free the dust which may have adhered to it. This cleaning process should always be carried on in the open air and away from any flame, as the fumes of gasoline, etc., are very inflammable when mixed with air and ignite easily, often causing serious accidents.