Safe use of pressure cooker: First, it is very important not to hold too much. When the pressure in the pot is generated, there is almost no safe buffer space. Continue to heat, the pressure will increase, causing an explosion. According to the manufacturer's instructions, the food in the pot should not exceed 2/3 of the total volume, but I think it is best not to exceed 1/2.
The second point: Before each capping, carefully check whether the vent hole in the center of the cover is clear. If the light is not bright and the air blowing is not smooth, it must be blocked and removed before it can be stamped. After capping, the more scientific method is not to add a pressure limiting valve first, and to add a pressure limiting valve in time on the basis of uniform evaporation of the central hole after the cold air in the pot is heated and discharged.
The third point: Before adding the pressure limiting valve, check the air holes on the pressure limiting valve. Methods You can blow air through the big hole with your mouth, and air will come out when the shunt hole and drainage hole are clear. If it is blocked, you can use it by poking it with a thin wire. Special pressure cooker for cooking beans and porridge, ribs seaweed soup. The foam generated by high pressure in the pot is easy to block the central hole and air hole of the pressure limiting valve.
The fourth point: start cooking with a big fire, and switch to a small fire after charging. Don't be lazy when using the pressure cooker. Some people like to cook with a pressure cooker, but some people stay away from the kitchen for a long time and don't know the state of the pressure cooker in use, which will inevitably lead to accidents.
One taboo of using pressure cooker is improper choice. The first thing is to buy pressure cookers selectively. We must choose pressure cookers with brands, manufacturers, instructions and qualified quality. Don't buy fakes. Pressure cookers are generally divided into four types: 20, 22, 24 and 26 cm. You can buy a trumpet with a small population; With a large population, it is natural to buy a large size. But considering the thermal efficiency, you'd rather choose a bigger one. Pressure cookers are divided into aluminum, aluminum alloy and stainless steel. They have their own characteristics: light aluminum, fast heat transfer, low price and service life of more than 20 years. But using it will undoubtedly increase the absorption of aluminum, and long-term use is not good for the body. Aluminum alloy products are better, more durable and stronger than pure aluminum products. Although the stainless steel pressure cooker is expensive, it is heat-resistant, beautiful, difficult to react with acids, alkalis and salts in food, and has the longest service life, which can reach more than 30 years. Therefore, even if you spend more money at a time, you'd better buy stainless steel.
Second, if you don't learn, avoid using it. Someone bought a pressure cooker, don't ask, don't learn, just pick it up, this is the most dangerous! When using the pressure cooker for the first time, be sure to read the instruction manual of the pressure cooker. Be sure to follow the instructions, or ask someone who knows what to do. Never use it without learning it.
Don't check it before use. When using, first carefully check whether the exhaust hole is clear and whether the hole under the valve seat of the safety valve is blocked by residual rice grains or other food residues. If it is blocked by food during use, the pot should be removed from the fire source, and the air holes should be cleaned after forced cooling, otherwise the food will be sprayed out and burn people during use. Also check whether the rubber gasket is aging. Rubber sealing rings will age after a period of use. The aging apron is easy to make the pressure cooker leak and needs to be updated in time.
Fourth, don't overlap the upper and lower handles. The handle of the pot cover must be completely coincident with the handle of the pot before it can be placed on the stove to cook food, otherwise it will cause an accident of popping the pot cover.
5. Do not pressurize without authorization. When in use, someone arbitrarily increases the weight of the pressure valve to increase the pressure in the pot and forcibly shorten the production time. I don't know that the pressure in the pot has strict technical parameters. Ignoring this scientific design is tantamount to joking with your own life and will lead to serious consequences. Don't take the risk! In addition, when in use, if the fusible metal piece (plug) on the pot falls off, it must not be blocked by other metal objects, and a new piece of the same kind should be replaced.
Six bogeys are too full. When using a pressure cooker to put food raw materials, the capacity shall not exceed four-fifths of the internal volume of the pot, and if it is an easily expandable food such as beans, it shall not exceed two-thirds of the internal volume of the pot.
Seven, don't half-open the lid. In the process of heating, never open the lid halfway to avoid food bursting and scalding. Do not remove the heavy hammer or pressure regulating device before confirming cooling, so as to avoid food splashing and personal injury. The cover can only be opened after natural cooling or forced cooling.
Don't look at the temperature. The use of pressure cooker is very particular about temperature, especially not to have a big fire. When the fire is heated, as long as the steam in the pot comes out of the exhaust pipe? Hissing? Sound can reduce the furnace temperature and make the pressure limiting valve keep a hissing sound until cooking is finished. This is not only safe, but also saves time and fuel.
Don't scrape with sharp tools. After use, the pressure cooker must be cleaned in time, especially to check whether the safety plug has food deposits and residues, so as to keep the appearance of the cooker clean. Do not use sharp tools, such as knives.
The main points of pressure cooker purchase should be to buy new models and pressure cookers of well-known brands in reputable shopping malls; If the pressure cooker parts are damaged, they should be repaired or replaced by regular manufacturers; Read the instructions carefully before use; During the use of the pressure cooker, right? Cover, hole, valve, ring, plate? The five components should be well maintained, and the pressure cooker that has been used for more than 8 years can not be used again even if it is not faulty. What is the biggest difference between pressure cooker and other pots? High pressure? Two words. Because of its closed and high-pressure characteristics, it is easy to cook and rot when processing food, saving time and losing less nutrition and flavor. But as we all know, it is very dangerous to add hot water to a closed container. Because the steam can't leak out, the pressure in the container will be great, which is easy to cause the container to explode. In order to keep the pressure in the pressure cooker from being too high, all pressure cookers are equipped with? Safety valve? So that when the pressure in the pot exceeds the specified limit, it can leak from this artificially set weakest place in time.
The pressure cooker is made of high-quality aluminum plate or stainless steel plate, and the working pressure is 80 ~ 100 kPa. When selecting a pressure cooker, we should not only look at whether the surface is smooth, whether there are alkali stains, oil stains and water stains inside and outside the cooker, but also whether there are defects such as pits, dents, scratches and burrs, whether the bottom and periphery of the cooker are smooth, round and tidy, and whether there are air holes and slag inclusions.
So, which is better, aluminum pressure cooker or stainless steel pressure cooker? This mainly depends on the economic strength of the buyer. Because the manufacturing process of stainless steel pressure cooker is difficult, the price is slightly more expensive than that of aluminum pressure cooker. But as far as the safety performance is concerned, as long as the pressure cooker is produced according to the national standards GB 13623-92 and GB 15066-94, the use safety can be guaranteed. But one thing must be clear, that is, no matter what kind of pressure cooker, the service life can not exceed 8 years, and the consequences of extended service will definitely outweigh the disadvantages.