Purple rice is a variety of rice and belongs to glutinous rice. Only cultivated in Hunan, Sichuan, Guizhou and other places, purple rice is hard in texture. Soak in water 1 hour before cooking, so that the purple rice can be softer and more waxy.

The difference between purple rice and ordinary rice is that there is a thin layer of purple substance on its seed coat. Purple rice is very fragrant and glutinous when cooking. As a dietary supplement, it is called purple glutinous rice or "medicine valley". Rice porridge cooked with purple rice is fragrant, shiny, soft and delicious, and is called "longevity rice" because of its rich nutrition.