Pressure cooker, also called pressure cooker, can be used to heat food to more than 100℃, was discovered in 1679 by the French physicist Papin. With its weird high temperature and high pressure effect, it greatly reduces cooking time and saves energy; However, the use of pressure cookers is also taboo.
The way the pressure cooker is used
1. After being used for many years, the pressure cooker will undergo certain changes in its structure through high temperature and high pressure, and the material will become loose, resulting in decreased strength. These changes are very subtle and difficult to be detected by the naked eye. The service life of the pressure cooker is defined as 1 hour a day by the relevant national departments through the durability detection and test, and the service life is 8 years.
2. When using a pressure cooker to cook food, the water or food in the pot should not span 4/5 of the total capacity of the pot, and it is best to control it below 2/3.
3. Overheated stoves can also pose a threat to the use of pressure cookers. When the pressure in the pot due to high temperature crossed the pressure of the rolling, the longer the time the greater the pressure, across a certain pressure, will also occur dangerous. So when heating the pressure cooker, we should only use medium and low gear fire, which is safe and energy saving.
4. When the pressure cooker is finished cooking, the valve cover is not removed, and the high-pressure steam in the pot has not been discharged unprecedentedly. It is never easy to open the lid of the pressure cooker, otherwise the lid may be flushed up due to the excessive pressure in the pot, resulting in danger. If you are eager to eat, you can gradually pour warm or cold water on the lid to force the pressure cooker to cool, and then open the lid after the steam in the pot has dissipated.
5. After each use of the pressure cooker, it is necessary to thoroughly wash the inside and outside of the cooker, especially the exhaust pipe, valve cover and the sealing section, to prevent the remaining food debris from affecting the safe use.
6. After a long time of use, the rubber ring in the top cover of the pressure cooker will show signs of aging such as discoloration, hardening, brittle and elasticity decline, which should be replaced regularly according to the instructions. When washing the rubber ring, it is best to wash it with water together with the lid of the pot. Do not remove the rubber ring alone for washing, to prevent the rubber ring from frequently stretching and deformation, affecting the sealing property.
