How to make black-bone chicken in a five-star hotel?

Ingredients: 750g black-bone chicken seasoning: 20g cooking wine, 7g onion, 7g ginger and salt10g. After the black-bone chicken was slaughtered, the internal organs were taken out from the neck incision and the wing tips and claw tips were chopped off. 2. Cut the onion into sections and slice the ginger for later use; 3. Blanch the black-bone chicken in a boiling water pot, remove it and wash it with warm water; 4. Cut the chicken gizzards with a knife, remove the yellow skin and impurities in the inner membrane, wash them with chicken liver and heart, blanch them in a boiling water pot, remove them and wash them with warm water; 5. Enlarge the fire in the pan, add black-bone chicken pieces, chicken gizzards, chicken liver, chicken heart, cooking wine, onion slices, ginger slices and water 1500ml to boil; 6. Skim off the floating foam, cover the lid, simmer on low heat until the black-bone chicken is crisp and rotten, sprinkle with salt and simmer for a while.