First simmer with water, remove the floating foam and impurities, and leave the soup for spare.
Oil, fragrant ginger, garlic, crushed pepper
Add soy sauce, stir fry a few times and then reserve the reserved water. At this time, you can also add spices to the ingredients, star anise, etc.
Boil the fire, simmer for more than an hour on a small fire, depending on the length of the hoof, add a little vinegar
When the heat is stewed, the lid is covered, and the chopsticks are used to try whether the meat is soft. If you are ok, you can start the fire.