1. Ingredients: a handful of dried tea tree mushrooms, 1 carrot, half an old duck (about 1 jin), appropriate amount of ginger and green onion.

2. Cut the duck meat into small pieces and blanch it in boiling water for two to three minutes to remove the blood and oil foam. Drain and set aside. Put the soaked tea tree mushrooms, duck meat and ginger slices into a clay pot together, add an appropriate amount of water and bring to a boil. After reducing the heat to low and simmer for half an hour, add the carrot cubes and continue to cook for half an hour. Season with a little salt and chopped green onion.

3. Efficacy: Tea tree mushroom old duck soup has the effects of strengthening the spleen and replenishing qi, producing body fluids and quenching thirst. Regular consumption can improve human immunity.