Because of the production of purple rice origin restrictions small, high value (grams), in the market for the sale of purple rice is mostly black rice (10% black rice plus glutinous rice) or black rice (black rice) class added 3-5% of the natural purple rice is not the pure Mojiang purple rice. In the purchase can be identified according to the following methods:

Pure Mojiang purple rice grains long and thin, full and uniform particles. The appearance of the color is purple-white or purple-white with small purple blocks. Water washing water color is black (actual purple). It is easy to leave a purple-black color in your fingers when you grab it with your hands. The grains remain purple-white when the color is removed by scraping with the fingernail. Cooking pure purple rice is crystal, translucent, glutinous (sticky), and can be steamed to make the broken rice renewed. It is sweet and delicate in the mouth and has a good flavor.

And the appearance of black rice bright color, black wrapped the whole rice grain. After scraping the color block with the fingernail, the color of the rice grain is the same as rice.