Materials/Tools: big bone, scallion, ginger, garlic, star anise, prickly ash, soy sauce, oyster sauce, cooking wine, thirteen spices, salt, chicken essence, pot and bowl.

1, clean the big bones with clear water, and then soak them for about an hour. Soaking is to remove the blood from the big bones and then clean them.

2, put cold water in the pot, put the big bones, then put a few pieces of ginger, put a few pieces of onion, and then pour in cooking wine, so as to remove the fishy smell of the big bones.

3. Remove the clear water, wash the floating foam with clear water, and then control the moisture. Cut the onion into pieces, cut the ginger into pieces, put a little oil in the pot when it is hot, and add the onion, ginger, garlic, pepper and star anise until fragrant.

4. Then add the big bones, add the soy sauce, oyster sauce and the old color, and stir well. Add water to the pot, the water will not exceed a large piece of ingredients, and the bones need to be cooked for a long time. Add pepper and sugar to make it fresh.

5. Pour cooking wine on the side of the pot, cover the lid and bring to a boil. Then simmer for about two hours. Sprinkle a proper amount of salt on the pot and let it simmer for another 5 minutes.