Vacuum low-pressure pot is a kind of pot invented by happycall in Korea. There is pressure when cooking, but it is a safe pressure that can be turned on at any time. Pressure cookers are mainly too dangerous and will destroy the nutrients of food. In addition, when cooking is completed, the air pressure in the pot will be automatically adjusted to a vacuum state. After turning off the fire, you can see that the food will still be stewed, and the fresh-keeping ability can reach 72 hours, so that the umami taste and taste of the soup will not be lost when waiting for people to eat.