How to cook szechuan peppercorns

Despite the name, these dried berries are not related to traditional black peppercorns. They come from a type of ash tree and have a peppery, somewhat citrus taste. Popular in Chinese cuisine, Szechuan peppercorns often are mixed with salt or used as a flavoring for cooking oils. This flavored oil also can be used as a salad dressing. Although growing in popularity, Szechuan peppercorns may be available only at stores specializing in Asian foods.