on what principal working of pressure cooker is based ?
Answers
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The pressure cooker works on the principle of steam pressure.
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Answer:
Explanation:
Pressure cooking is the process of cooking food, using water or other cooking liquid, in a sealed vessel known as a pressure cooker. This simulates the effects of long braising within a shorter time.
Almost any food that can be cooked in steam or water-based liquids can be cooked in a pressure cooker.[1]
The cooker works by trapping the steam produced from boiling the cooking liquid inside the vessel. This causes internal pressure and temperature to rise quickly. After use, the steam is slowly released so that the vessel can be opened safely.
History
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A six-quart pressure cooker manufactured by Archibald Kenrick & Sons in England, circa 1890
In 1679, French physicist Denis Papin, better known for his studies on steam, invented the steam digester in an attempt to reduce the cooking time of food. His airtight cooker used steam pressure to raise the water's boiling point, thus cooking food more quickly. In 1681 Papin presented his invention to the Royal Society of London as a scientific study, he was later elected a member.
In 1864, Georg Gutbrod of Stuttgart began manufacturing pressure cookers made of tinned cast iron.
In 1918, Spain granted a patent for the pressure cooker to Jose Alix Martínez from Zaragoza. Martínez named it the olla exprés, literally "express cooking pot", under patent number 71143 in the Boletín Oficial de la Propiedad Industrial.[2] In 1924, the first pressure cooking pot recipe book was published, written by José Alix and titled "360 fórmulas de cocina Para guisar con la 'olla expres'",[3] or 360 recipes for cooking with a pressure cookerOriginally Answered: What is the working principle of pressure cooker? As the pressure rises, the temperature of the water and steam inside the sealed pot (the pressure cooker) also rises above the normal 100ºC (212ºF) boiling point temperature.