Citron tea's raw material is a unique specialty of Korea, called yuja, which is called Jinyou in Chinese. It is refined from fresh grapefruit and honey by constant temperature cellar fermentation. Pomelo itself is rich in nutrition, containing far more calcium and vitamins than other fruits, and the content of vitamin C is three times that of lemon and orange. The content of calcium is 10 times higher than that of apples, pears, bananas and other fruits. Grapefruit is also rich in natural citric acid and a variety of inorganic salts, which not only contributes to the functions of liver, stomach and lung, but also has the effects of clearing heat, relieving cough and resolving phlegm. Citron tea's unique constant temperature cellar fermentation technology not only retains the original nutrition of fresh grapefruit, but also removes the bitter taste of grapefruit itself and decomposes some harmful ingredients. Due to the addition of natural honey, the trace elements needed by human body are further increased. In developed countries, people pay more and more attention to the role of grapefruit beauty beauty, which is highly praised by beauty lovers. Rich nutrition and unique aroma make citron tea a product highly accepted by consumers. Citron tea can drink hot and cold water directly, and black tea, green tea and jam can be added for dessert. After drinking, the remaining pulp can be eaten and tastes fragrant.