https://www.spicerushi.com/products/red-sichuan-pepper-powder.html Red sichuan pepper, the fruit of Zanthoxylum bungeanum Maxim., belongs to the Rutaceae family. The surface of its fruit is dotted with oil cells, which contain volatile oils and amide substances, making it the unique ingredient that provides a numbing flavor. Our crushed Sichuan pepper has been used in Chinese cuisine for thousands of years and is one of the most traditional seasonings in China. Sichuan chilli powder is mainly found in regions such as Sichuan, China.