1. Material: 2 bovine bone marrow, Cordyceps sinensis 15g, 20 Lycium barbarum, 4 red dates, 4 slices of ginger and appropriate amount of salt.

2. Soak Cordyceps sinensis in water for a while. Cut bovine bone marrow into small pieces, blanch and remove for later use.

3. Put enough water into the casserole and add bovine bone marrow, Cordyceps sinensis, ginger slices, medlar and red dates. After the fire boils, turn it to low heat 1 hour. Season with salt.