1, first blanch the pig leg bones for 3-5 minutes to remove the blood from the meat.
2. Then take out the scalded pig leg bones, rinse them in warm water for 2-3 times, and then rinse the blood foam and impurities again.
3. Refill the casserole with water, add pork leg bones, salt and ginger to the pot, and bring to a boil.
4. Then cover with low heat and cook for 3-4 hours. If the middle soup evaporates a lot, you can add some boiling water.
5. At this time, filter the cooked broth with a strainer and store it in the refrigerator.