How long does it take to stew the big bonzi bone in the pressure cooker?

It takes 25 minutes to stew the big bonzi bone in the pressure cooker. Specific practices are as follows:

The materials that need to be prepared in advance are: 2 pieces of pork bones, 2 pieces of ginger, scallion 1 segment, and refined salt 1 spoon.

1. Step 1, break the big bone in the middle and soak it in clean water 1 hour.

2. Put cold water and big bones in the pot, and bring to a boil over high fire to remove impurities.

3. After taking it out, wash it with clear water and set it aside.

4. Put the stick bone, water, onion and ginger into the pressure cooker.

5. Cover and press for 25 minutes after ventilation.

6. Add salt to the pot and mix well.

7. Then take it out, that's all.