Szechuan pepper, also spelled Sichuan pepper, is a spice made from the dried fruit husks of trees in the Zanthoxylum genus, part of the citrus family. Despite the name, it is not related to black pepper or chilli peppers. The spice is a defining ingredient in Sichuan Chinese cuisine.
What sets Szechuan pepper apart from other spices is its unique numbing sensation, known as “málà” in Chinese. The compound hydroxy-alpha-sanshool triggers a tingling, buzzing feeling on the lips and tongue, quite unlike the heat of chilli. Combined with chilli, it creates the characteristic numbing-hot flavour profile of many Sichuan dishes.
The spice has a bright, citrusy, slightly floral aroma. It is used whole or ground in stir-fries, hotpots, mapo tofu, dan dan noodles, and spice blends such as Chinese five-spice powder. Several related species are used across East and Southeast Asia, each with slightly different flavour profiles.
How it's produced
Szechuan pepper trees are small, thorny trees or shrubs grown primarily in the mountainous regions of China’s Sichuan province, though related species are cultivated across East Asia. The trees are relatively hardy and can grow in poor soils at altitude.
The small berries are harvested in late summer or autumn when they turn red. After drying, the outer husks split open and the small black seeds inside are removed and discarded, as they are gritty and lack flavour. The dried husks are the usable spice. Harvesting is labour-intensive due to the thorny branches. Most Szechuan pepper sold globally is sourced from China, though small-scale cultivation exists in other regions.
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