Black rice into the water discoloration is a normal phenomenon. Natural black rice surface has water-soluble pigments, immersed in water will produce a certain fading color phenomenon, but does not rule out the possibility of being artificially dyed. Dyed black rice only through the color to identify the authenticity of the superiority and unreliability. It is difficult to identify natural black rice and dyed black rice with the naked eye, and only with the help of water immersion can we recognize the truth. Not only that, dyed black rice is easier to cook compared to natural black rice, natural black rice needs to be soaked for a long time before it is easier to cook, while dyed black rice is better cooked.

Can be identified from the following aspects of true and false black rice, one is to look at the soaking water, dyed black rice soaked in water, the water will show a relatively thick black, the real black rice soaked water also has color, but are generally dark purple, more translucent; and then smell the taste of the real black rice generally have a clear flavor, while the fake black rice is less fragrant, or even stink; can also look at the gloss, the real black rice grains have a glossy, fake black rice color is more dark, and the color is more dark. The color of the fake black rice is relatively dark.

In fact, the business will be ordinary rice dyed black rice for sale, from the economic benefits, almost no profit. Because with ordinary dyes, washing a white, easily recognized, and to dye ordinary rice into a high fidelity "black rice", technology, dyes on the cost is too high, the business will not do this money-losing business.