Sichuan, also known as Szechuan, is a province in China. It's the origin of Panda bears and Sichuan pepper. This spice is very common in Asian cuisine. It is not related to pepper and has a very special taste with a citrus note. Notably, Sichuan pepper creates a numbing sensation in your mouth. Try it sprinkled over your dish or use the remainder in a dish with beans or mushrooms.