The principal ways of cooking are boiling, broiling, stewing, roasting, baking, frying, sautéing, braising, and fricasseeing.
Boiling is cooking in boiling water. Solid food so cooked is called boiled food, though literally this expression is incorrect. Examples: boiled eggs, potatoes, mutton, etc.
Water boils at 212° F. (sea level), and simmers at 185° F. Slowly boiling water has the same temperature as rapidly boiling water, consequently is able to do the same work,—a fact often forgotten by the cook, who is too apt “to wood” the fire that water may boil vigorously.
Watery vapor and steam pass off from boiling water. Steam is invisible; watery vapor is visible, and is often miscalled steam. Cooking utensils commonly used admit the escape of watery vapor and steam; thereby much heat is lost if food is cooked in rapidly boiling water.
Water is boiled for two purposes: first, cooking of itself to destroy organic impurities; second, for cooking foods. Boiling water toughens and hardens albumen in eggs; toughens fibrin and dissolves tissues in meat; bursts starch-grains and softens cellulose in cereals and vegetables. Milk should never be allowed to boil. At boiling temperature (214° F.) the casein is slightly hardened, and the fat is rendered more difficult of digestion. Milk heated over boiling water, as in a double boiler, is called scalded milk, and reaches a temperature of 196° F. When foods are cooked over hot water the process is called steaming.
Stewing is cooking in a small amount of hot water for a long time at low temperature; it is the most economical way of cooking meats, as all nutriment is retained, and the ordinary way of cooking cheaper cuts. Thus fibre and connective tissues are softened, and the whole is made tender and palatable.
Broiling is cooking over or in front of a clear fire. The food to be cooked is usually placed in a greased broiler or on a gridiron held near the coals, turned often at first to sear the outside,—thus preventing escape of inner juices,—afterwards turned occasionally. Tender meats and fish may be cooked in this way. The flavor obtained by broiling is particularly fine; there is, however, a greater loss of weight in this than in any other way of cooking, as the food thus cooked is exposed to free circulation of air. When coal is not used, or a fire is not in condition for broiling, a plan for pan broiling has been adopted. This is done by placing food to be cooked in a hissing hot frying-pan, turning often as in broiling.
Roasting is cooking before a clear fire, with a reflector to concentrate the heat. Heat is applied in the same way as for broiling, the difference being that the meat for roasting is placed on a spit and allowed to revolve, thicker pieces alway being employed. Tin-kitchens are now but seldom used. Meats cooked in a range oven, though really baked, are said to be roasted. Meats so cooked are pleasing to the sight and agreeable to the palate, although, according to Edward Atkinson, not so easily digested as when cooked at a lower temperature in the Aladdin oven.
Baking is cooking in a range oven.
Frying is cooking by means of immersion in deep fat raised to a temperature of 350° to 400° F. For frying purposes olive oil, lard, beef drippings, cottolene, coto suet, and cocoanut butter are used. A combination of two-thirds lard and one-third beef suet (tried out and clarified) is better than lard alone. Cottolene, coto suet, and cocoanut butter are economical, inasmuch as they may be heated to a high temperature without discoloring, therefore may be used for a larger number of fryings. Cod fat obtained from beef is often used by chefs for frying.