Preparation materials: beef offal, ginger, clear water, astragalus, medlar, salt and chicken essence.
First, slice the ginger.
Second, soak the bovine bone marrow in water to remove blood foam.
Third, put cold water in the pot, add bovine bone marrow and ginger slices, and add the prepared accessories.
Fourth, the fire boils and turns to a small fire for 3 hours.
5. Add seasoning and serve.