A marinade, typically liquid or semi-liquid in consistency, intended to impart distinctive flavors and tenderize the meat used in preparing al pastor, is a crucial component of the dish. The specific blend frequently includes a combination of dried chiles, spices, and fruit juices, resulting in a vibrant red hue and a balance of smoky, spicy, and sweet notes. As an example, a blend of ancho chiles, guajillo chiles, pineapple juice, and achiote paste can form the basis for this flavor profile.
The significance of the marinade lies in its ability to deeply penetrate the meat, resulting in a characteristic taste and texture. This step is fundamental in achieving the authentic flavor profile associated with al pastor, transforming relatively inexpensive cuts of pork into a culinary experience. Its historical context connects it to Lebanese shawarma, adapted with indigenous Mexican ingredients after Lebanese immigrants introduced vertical spit-roasting techniques.