Sichuan pepper powder is a spice derived from the husks of the prickly ash tree's fruit, known for its unique citrusy flavour and numbing sensation. It is a key ingredient in Sichuan cuisine, imparting a distinct aroma and tingling sensation to dishes. The powder is made by grinding the dried husks of Sichuan peppercorns and can be used to season a variety of dishes, including stir-fries, soups, marinades, and sauces. It adds depth, complexity, and a spicy kick to recipes, making it a popular choice for those seeking to add authentic Sichuan flavour to their cooking.