On the plateau, the air is thin, so the gravity of the gas is small, so the force acting on the surface of the object immersed in it is also small, so the air pressure is low. When the air pressure is low, the boiling point of water decreases. On the plateau above 6000 meters, the boiling point of water at 100 degrees is at standard atmospheric pressure, while the plateau air pressure is low, so the water will boil at about 80 degrees.

The pressure cooker can increase the pressure, but the boiling point in plateau is low, and bubbles usually start to bubble when they don't reach 100 degrees, so the water can reach 100 degrees by using this closed pot, especially when cooking, and the effect will be better if the pressure cooker is used at an altitude of more than 4000 meters.

Extended data:

Skills of cooking jiaozi.

1, knead gently

Before cooking Yuanxiao, gently pinch Yuanxiao with clean hands to make its skin slightly cracked, so that the cooked Yuanxiao is cooked inside and outside, will not be pinched, and is soft, smooth and delicious.

2. In boiling water

After the water boils, slowly put the Yuanxiao into the pot, then gently push it away with a spoon and stir it slightly in the same direction to make it rotate several times without sticking to the pot.

Step 3 cook slowly

Cook the fire for a while, and when the Lantern Festival floats, quickly switch to slow cooking, otherwise it will keep the Lantern Festival tumbling in the pot, and the cooked Hundred Yuan Festival will not be delicious.