1, bean boiling method

That is, boiled with other medicines. Liu Sude, a doctor in the Ming Dynasty, wrote a recipe for boiling beans: Old people can let loose their black hair, strengthen their teeth and improve their eyesight. The prescription uses Angelica sinensis 12g, Ligusticum chuanxiong, Glycyrrhiza uralensis Fisch, Pericarpium Citri Tangerinae 3g, Atractylodis Rhizoma 3g, Radix Paeoniae Alba, Flos Chrysanthemi 6g, Eucommiae Cortex, Radix Astragali Preparata 6g, Achyranthes bidentata, Radix Rehmanniae, Radix Rehmanniae Preparata 20g 12g, salt 20g, Polygonum Multiflori Radix 20g, Fructus Lycii 20g, cooked with black beans to remove the medicine, and dried to get beans. Zhang Shiwan's Ben Feng Jingyuan records that black beans "enter the kidney and divide blood, and steam with green salt, Eclipta prostrata and Polygonum multiflorum, but eating black beans is not white, and its kidney-tonifying function is known". These are all ways to cook black beans with drugs and then eat beans without drugs.

2. Single service method

Not cooked with other drugs, it has the effect of tonifying kidney and nourishing blood. Compendium of Materia Medica says that "it can replenish essence and marrow, strengthen tendons and moisten muscles, turn white and turn black, grow old for a long time, and eventually become disease-free".