Step 1: Buy gravy and big bones. General 1 g halogen material can halogen 20-25 g big bones; Step 2: Cook the marinade, big bones and water in a pot. The marinade is wrapped in gauze, and the dosage is small. Step 3: After the water boils, turn down the fire to keep the water slightly boiling. Step 4: After the big bones are marinated, cover and stew for 5- 10 minutes.