1. Use a hose to flush water into the lungs of the pig through the long throat of the pig, swelling greatly, and then pull out the hose to drain the water in the lungs, and repeat several times until the pink lungs are clean. If you don't have a water pipe, you can use the shower head for bathing, just twist off the shower head. Remember to clean the sprinkler hose after using it.
2. Wash clean pig lungs and cut into small pieces
3. Put the cut pig lungs in the pot and then drain the water. Take the spoon out of the water while boiling, and just do it until there is no water. Special attention is that nothing can be put in the pot, especially oil, must not be put,
4. After the well-watered pig lungs are filled and cooled, use the fresh-keeping bag to divide the amount of soup each time. When the soup is frozen, it can be used next time. For a family of three, a pig lung can be used for three times of soup. Add lean meat and bones as much as you like.
