Sichuan pepper, also known as Szechuan pepper, Szechwan pepper, Chinese prickly ash, Chinese pepper, Timut pepper and mala pepper, is a spice commonly used in Szechuan cuisine. Despite its name, Sichuan pepper is not closely related to black pepper or chili peppers. It is made from plants of the genus Zanthoxylum in the family Rutaceae, which includes citrus and rue.
When eaten, Sichuan pepper produces a tingling, numbing effect due to the presence of hydroxy-alpha sanshool. The spice has the effect of transforming other flavors tasted together or shortly after. It is used in Sichuan dishes such as mapo doufu and Chongqing hot pot, and is often added together with chili peppers to create a flavor known as málà (Chinese: 麻辣; "numb-spiciness").