There is a difference in color between black and white cactus. Black cactus is black, white cactus is white, roasted fairy grass is a traditional specialty drink in southwestern Fujian Fujian, which in China's domestic authentic ancient practice is used grass directly boiled, while others are used in the cactus powder, cactus liquid production. Roasted fairy grass in addition to popular in Fujian Taiwan, Zhejiang part of the region (such as Taizhou, Wenling, etc.) is also popular in Japan and Southeast Asia.