Mume is the immature fruit of Prunus mume, a deciduous tree plant in Rosaceae, which contains citric acid, malic acid, succinic acid, sugar, sitosterol, vitamin C and other components, and has an ideal antibacterial effect. Then the dark plum juice made by dark plum is fragrant, sweet and sour. You can drink more when you are upset, which has the effect of promoting fluid production and removing fire. It is a necessary drink in this hot summer. Because ebony contains alcohol, vitamin E, vitamin B, vitamin C, malic acid, citric acid, iron, phosphorus and so on. It is sour in taste and mixed in nature, and has the effects of invigorating spleen and stomach and nourishing liver and kidney. The "three poisons" are the poison of instant food, the poison of blood and the poison of water. You should always add some perilla leaves when soaking ebony. After adding perilla leaf, dark plum has strong sterilization and detoxification ability. Mume also contains trace picric acid that can improve the detoxification ability of liver and gallbladder, which can make gallbladder contract, promote bile secretion and resist protein allergy.