1. Add a small scoop of oil into the frying pan and heat it up. Add a little ginger and stir fry it to make it fragrant. Then add catfish head. Fry it over low heat until both sides are golden yellow and set aside.
2. Put the fried catfish head into the soup pot, add ginger slices, and a proper amount of water, the amount of water is not more than the head of the fish, cover and turn the fire.
3. Heat for about 5 minutes. When the soup starts to turn white, put in tofu,
4. Add a little salt, turn to low heat and simmer for 40 minutes, then put in white pepper and shallot powder according to your taste.