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Which master invented the pressure cooker~~~
Denis Papin, a French physicist, in his book published in 1681, introduced people to the fact that "the oldest, toughest beef can be turned into tender, unquestionably fine meat." This was due to his invention in 1679 of the hermetically sealed pot that produced steam heat to cook food quickly. At that time this pot was named after the inventor and was called the "Papan Cooker." This is a pressure cooker, commonly known as a pressure cooker. The Papan pressure cooker is made of pig iron and has a sealed lid that heats water into very hot steam at temperatures of up to 130. C. The higher the temperature, the faster it penetrates into the food, thus shortening the cooking time.

Papan was working at the Royal Society when he invented the pressure cooker, and by order of the Society's Council began writing a book in 1680 describing the pressure cooker. Members of the council also tasted Papin's pressure-cooked food in August 1682 and praised it.

But because of the uneven heat dissipation, pressure regulation problems, and occasional explosions, the pressure cooker was unappreciated for a long time. By 1807, the canning apparatus of the pioneer Nicolas Appel in Napoleon's army to study easy to supply the war, not easy to spoil the food, and renewed interest in the pressure cooker. Appel first used pressure cookers to cook food, and then put it into jars to seal it, which could be preserved for a longer period of time without spoiling.In the late 19th century, small pressure cookers were widely utilized by people, and played a role in the processing and storage of fruits and vegetables.In 1917, after the U.S. Department of Agriculture declared that pressurized canning was the only safe method of processing low-acid foodstuffs, the pressure cooker became very popular.

Early pressure cooker is bulky, the lid with a wing nut fastening, later appeared light alloy pot, the lid is also improving, now the pressure cooker, the body and the lid have a flange, tighten the screw will be interlocked, the lid has a sealing gasket to keep airtight, the lid has a safety valve to prevent the explosion.

Using a pressure cooker not only shortens the cooking time and uses less water, but also maintains the vitamin and mineral content of the food better than normal cooking methods. It is especially useful at high altitudes, where it can solve the problem of lower boiling points due to low atmospheric pressure.

Before Watt's highly efficient steam engine, there were in fact many people working on steam engines. Such as 720 BC Egyptian philosopher Silo, 1612 French mechanic Degas, 1698 Sa thing Ray, and Di Segoli ear, Newcomen and no less than dozens of people, of which Pypon is also one of them, but his research on the steam engine contribution to mankind is not as good as the by-products of his invention - - pressure cooker. -the pressure cooker.

In the late 17th century, the young Frenchman Pappen studied steam engines in London, and his research on steam boilers led to his invention of the pressure cooker for cooking. The steam cooker he invented was barrel-shaped with a lid that fastened and an automatic safety valve. This safety valve was also an invention of Pypon's. In 1679, Pypon gave a live performance for the Royal Society in which he cooked some food in this pot, and the great architect C. Raine, who found the food delicious, suggested that Pypon write a pamphlet describing the pot's use and characteristics. Piper wrote: "This pot makes old, tough beef and mutton tender and soft, and preserves the flavor and nutrients of the vegetables and meat." But it wasn't until World War II that the pot became popular among housewives who needed to think about conservation.

The pressure cooker is now in the kitchens of millions of families, but no one would have guessed that it was the "unprofessional" invention of a young Frenchman more than 300 years ago.

The pressure cooker has been in the kitchens of millions of families for years.