Blanch beef brisket with scallion and ginger, put beef brisket, radish and potato into a pot, add ginger, garlic and star anise leaves, and add appropriate amount of soy sauce and salt. Add water less than half of the ingredients, put some rock sugar on the pot cover to boil, and then simmer for an hour. Boil the oil and salt in the pot, and pour in the vegetables and blanch them until they are raw.