
According to a hundred-year-old cookbook, there are four reasons for using a pressure cooker:
Value of a Steam Pressure Cooker
Less time for cooking – Whatever food is inside the pressure cooker is subjected to moist heat at a high temperature and cooks in much less time than it would at an ordinary temperature in an ordinary kettle. This fact has advantages for the housekeeper who has to meet emergencies in hasty preparation of meals.
Cereals may be deliciously cooked in twenty minutes in the pressure cooker, as compared with three hours of cooking on the stove. Beans may be well cooked in forty minutes instead of requiring five or six hours of cooking on the stove. A steamed pudding placed in the pressure cooker is ready to serve after being cooked for thirty minutes under ten pounds of pressure. Three hours would be required to accomplish this in any other way.
Even beef neck or flank, which would required from three to five hours of cooking on the stove, may be cooked in forty minutes in the pressure cooker.
Less fuel used – In most pressure cookers, only a short period of time is required to attain ten pounds of pressure. A low fire will maintain the pressure throughout the cooking process.
Micro-organisms killed – Micro-organisms that cause spoilage in canned foods are killed at the high temperature made possible by the use of steam under pressure.
Thorough cooking – The combination of high temperature and moist heat attained by the pressure cooker is probably more effective than any other methods of cooking for making certain foods digestible and tender. Cereals, with their large proportion of cellulose, and meats with tough fiber are among such foods.
The New Butterick Cook Book (1924)






