Watercress Qingfei Runzao, Chen Shen (duck kidney dry goods) heat and gas. Soup is good for autumn wind, dry cough, no dry mouth, dry mouth, staying up late, etc...
The material is washed, soaked, and immersed in hot water for 40 minutes.
Ginger peeled flat, lean meat cut, Chen kidney cut small pieces.
Chen kidney, lean meat, ginger into the pot, put the right amount of water. After the fire is boiled, turn to low heat for 30 minutes.
Add the watercress and cook for about 20 minutes (the last 10 minutes). (Chen kidney with salt)