Flour is fine, has a large specific surface area, can have more contact surfaces, and can be adsorbed. Flour can adsorb dirt and make fish heads cleaner.

Sturgeon fish head soup is a very delicious soup, and the preparation method is: 1, sturgeon head 1, Jinhua ham, bamboo shoots, radish, vermicelli and shallots; 2. Wash bamboo shoots, peel and slice them for later use; 3. Boil the water in the casserole and cook the Jinhua ham with the black skin removed for 15 minutes; 4. Add sturgeon head and ham pieces and cook for 15 minutes; 5. Put the cut bamboo shoots into a casserole; 6. Sprinkle a little white pepper in the pot to deodorize and refresh; 7. Cover the casserole and simmer for three hours; 8. After three hours, open the pot cover and put in the white radish slices; 9. Add the soaked vermicelli, cover and cook for 15 minutes, then sprinkle with onion soup.