Sansho peppercorn (Zanthoxylum piperitum), also known as Japanese prickly ash. A relative of the Sichuan peppercorn, with a similar hot/cold numbing zestiness caused by sanshool, a chemical similar in structure to capsaicin, and a bunch of aromatic oils. The bright citrusy aroma and tingling sensation is habit forming #sansho #sanshopepper #sanshopeppercorn #japanesepricklyash #zanthoxylumpiperitum #sanshool #specialherbs #coldspice #urbangardening #aromaticoils #oregongrown