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A stovetop pressure cooker. A pressure cooker is a sealed vessel for cooking food with the use of high pressure steam and water or a water-based liquid, a process called pressure cooking. The high pressure limits boiling and creates higher temperatures not possible at lower pressures, allowing food to be cooked faster than at normal pressure.
High-altitude cooking is cooking done at altitudes that are considerably higher than sea level. At elevated altitudes, any cooking that involves boiling or steaming generally requires compensation for lower temperatures because the boiling point of water is lower at higher altitudes due to the decreased atmospheric pressure. The effect starts ...
Pressure cookers produce superheated water, which cooks the food more rapidly than boiling water. Superheated water is liquid water under pressure at temperatures between the usual boiling point, 100 °C (212 °F) and the critical temperature, 374 °C (705 °F). [citation needed] It is also known as "subcritical water" or "pressurized hot water".
Modern cookers include electronic time, temperature and pressure controllers and are marketed as "automated multipurpose cooking appliances". The most modern ones include Bluetooth and WiFi capabilities and cooking procedures in recipe scripts, mainly by choosing the temperature, time and pressure in multiple steps, to execute and share. [7]
Pressure frying is mostly done in industrial kitchens.Ordinary home pressure cookers are generally unsuitable for pressure frying, because they are typically designed for a maximum temperature around 121 °C (250 °F) whereas oil can reach temperatures well in excess of 160 °C (320 °F) which may damage the gasket in an ordinary pressure cooker, causing it to fail.
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Pressure cooking – cooking in a sealed vessel that does not permit air or liquids to escape below a preset pressure, which allows the liquid in the pot to rise to a higher temperature before boiling. Simmering – foods are cooked in hot liquids kept at or just below the boiling point of water, [3] but higher than poaching temperature.
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