The materials that need to be prepared in advance are: 20g of bamboo ganoderma lucidum, walnut kernel 10g, jujube 10g, and appropriate amount of water.

1, the first step is to prepare the ingredients and set them aside for use.

2. Wash the bamboo ganoderma lucidum, walnut and jujube, put them in a casserole, and pour the water into the casserole.

3. Cover the pot, bring it to a boil, and then simmer for about an hour.

4. Pour into the cup and you're done.