buckwheat is not only for eating, but also for amazing health care. known as " food source in 21century', buckwheat contains higher VB2 more than 4-24 folds in wheat,rice and corn; its essential minerals are richer than in other grains. It is the most important that scientists have revealed theat buckwheat is abundant in flavonoids, particularly in which rutin accounts for 70%~90%rutin is just the most important factor of health-care