Clean the feathers of the ducks that are killed now, then burn the fluff on the ducks with an open flame, and finally take out the internal organs and clean them.

Half an old duck, yam, ginger, pepper, orange peel. Practice: Cut the duck into pieces, boil the water, pour in the blood-removed water, then rinse it with cold water, put the cold water and all the materials into the pot, boil the water with high fire, remove the alveoli floating on the surface, simmer for one hour, then add salt, season and cook for another ten minutes.