2. Wash the hairtail and cut it into sections, cut knives on both sides of the hairtail section, and cut the tofu into pieces with the same size as the hairtail section;
3. Add oil to the pot, fry the hairtail section and tofu block in the pot until the skin turns golden yellow, and take it out for later use;
4, add oil to the pot and heat it, add seasoning and stir fry, then add soy sauce, oyster sauce and sugar in turn;
5, then rush into boiling water, put the fried hairtail section and tofu block into the pot and stew with low fire;
6. Add salt and pepper to taste, add cooking wine to remove fishy smell, then simmer until the soup thickens and sprinkle with chopped green onion.