What is a pressure cooker

Pressure cooker is a cooking appliance that uses heat and pressure (usually in the form of trapped steam) to cook food. The basic concept of pressure cooking has existed for centuries. The simplest model is just a pot with a lock and a tightly sealed lid, which can be put in a fire or an original oven. More modern lids are designed to fit on the stove, although they can also be electric. They usually have pressure gauges and valves, which can be customized for cooking, and the settings can usually be changed according to different raw materials. Some people also use these tools to preserve canned food, usually as a substitute for water bath canning. Depending on the equipment, pressure relief requires a little skill, and there are usually several options based on the expected results. Although these devices are generally safe when used in accordance with instructions, they may pose a range of hazards if used improperly. Reducing the risk of burns and explosions usually requires attention to details and common sense, as well as a clear understanding of the working principle of the equipment before starting.