Buckwheat is divided into yellow buckwheat and black buckwheat, and black buckwheat is divided into common black buckwheat and black pearl black buckwheat (that is, wild black buckwheat, also known as golden buckwheat). Among all kinds of tartary buckwheat, black pearl tartary buckwheat has the best nutritional value, followed by black tartary buckwheat and yellow tartary buckwheat. According to the data, the flavone content of black buckwheat tea is 3-5 times higher than that of yellow buckwheat tea (the core nutrient element of black buckwheat tea is flavone).

In addition, from the perspective of maturity cycle, there are early-maturing, middle-maturing and late-maturing buckwheat varieties, and the maturity cycle of late-maturing varieties is as long as 1 month compared with early-maturing varieties. As we all know, the longer the maturity cycle, the richer the nutrients gathered.

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1, black tartary buckwheat shell is dark black, which is extremely difficult to shell, with small particles, high nutrients and extremely low yield, which is very rare.

2. The shell of tartary buckwheat is yellow-brown, and it is difficult to shell, and the particles are slightly larger, and the nutritional components are inferior to those of tartary buckwheat, so the yield is low.

3. The shell of hybrid tartary buckwheat is silvery gray or grayish yellow, which is very easy to shell, with large particles, low nutrients and high yield.