Sichuan pepper
Sichuan pepper is the aromatic husk of fruits from prickly ash trees, producing a tingling, numbing sensation rather than pepper-like heat.
Hydroxy-alpha-sanshool: An alkylamide in Sichuan pepper that produces tingling and numbness by affecting sensory neurons. This is the principal compound associated with the pepper’s characteristic tingling.
Zanthoxylum: A genus of aromatic trees and shrubs in the citrus family, Rutaceae. Sichuan pepper comes from several species in this genus.
Sichuan cuisine: The regional cuisine of Sichuan, China, known for layered flavors and varied uses of chili and aromatic spices. Sichuan pepper is a defining seasoning in many dishes from the region.
Zanthoxylum bungeanum: A prickly ash species whose dried fruit husks are widely used as Sichuan pepper. It is a major source of the red variety commonly associated with Sichuan.
TRPA1: A sensory ion channel involved in detecting irritants, temperature, and chemical signals. Research links sanshool’s sensory effects to activity in this nerve channel.
Pericarp: The wall of a fruit, formed from the ovary after fertilization. The spice is chiefly the dried outer fruit wall, not the seed.
Mala (spice): A pungent flavor profile combining chili heat with Sichuan pepper’s numbing sensation. The pepper supplies the numbing half of mala’s signature combination.
Zanthoxylum armatum: An aromatic prickly ash species used as a spice in parts of South and East Asia. Its fruit husks contribute to regional Sichuan-pepper products and related spices.
TRPV1: A sensory ion channel activated by capsaicin, heat, and other stimuli. It helps distinguish chili heat from Sichuan pepper’s mainly tingling sensation.
Rutaceae: The citrus family, a plant family that includes citrus trees and Zanthoxylum. Its family relationship explains Sichuan pepper’s aromatic kinship with citrus.