The jerk marinade is the key to achieving the distinct flavors of jerk chicken. To prepare it, you will need a combination of ingredients such as scotch bonnet peppers (or habanero peppers for a milder version), green onions, garlic, ginger, thyme, allspice berries, soy sauce, vinegar, brown sugar, and various spices like cinnamon, nutmeg, and cloves. Blend all these ingredients together in a food processor until smooth, and your jerk marinade is ready to be used.