Black Tartary Buckwheat Fragrant Tea: The whole tea is an ultra-micro tea, after being crushed and then shaped, the granule is light and thin, and has a strong smell of wheat biscuit. The taste is mellow and mellow. It is a kind of pure wheat flavor, which is characterized by high content of bioflavonoids (Rutin) , "stems, leaves, flowers, fruit, Rutin more. " . The whole plant-type product is made by crushing and refining the whole tartary buckwheat at the initial Florescence, i. e. the stems, leaves, flowers and fruits. The content of Rutin in the stems, leaves and flowers of tartary buckwheat was the highest at the initial florescence, reaching 7% .