Common recipes for black beans. Slaughter black-bone chicken, remove hair and viscera, and wash for later use. Dry-fry black beans in an iron pan until the skin of the beans cracks, then wash them with clear water and dry them for later use. Wash Polygonum Multiflori Radix, Fructus Jujubae and Rhizoma Zingiberis Recens respectively, remove the core from Fructus Jujubae and peel and slice Rhizoma Zingiberis Recens for later use. Add appropriate amount of water to the pot, bring it to a boil with high fire, add black beans, Polygonum Multiflori Radix, black-bone chicken, red dates and ginger, continue to cook for about 3 hours on medium fire, and add appropriate amount of refined salt to make soup. This dish is specially designed for tonifying kidney and promoting hair growth. Black beans, Polygonum multiflorum Thunb, and black-bone chicken are all good ways to tonify kidney, and the effect is better when used together.