1. After thawing the pork stick bones, soak in cold water for 3 hours, during which time the water was changed 3 times to remove blood water.
2. Pork stick bones in a pot under cold water, boil, skim off the foam and rinse.
3. The blanched pork stick bones are put into the pot again, and an appropriate amount of boiling water is added, the amount of water is less than that of the meat.
4. Add all the ingredients.
5. Add the old soy coloring.
6. Add two tablespoons of bean paste.
7. Sprinkle some salt.
8. Bring to a boil and simmer for 2 hours on low heat until the meat is soft and rotten.
