2. Usually, cook with high fire for about 5 minutes, then simmer with low fire when gas comes out. 15-20 minutes, then turn off the fire. When the pressure in the pot returns to normal, the pot can be boiled.

3. Check whether the sealing ring, air valve and high-pressure cap are in good condition before using the pressure cooker; The water added to the pressure cooker should be 2/3 higher than the material, but not higher than the scale of the inner wall of the cooker.