1 tablespoon black peppercorns1 teaspoon brown sugar1 tablespoon kosher salt½ teaspoon ground ginger½ teaspoon ground cinnamon1 teaspoon anise seeds, crushed¼ teaspoon ground clovesZest of 2 lemonsIn a small bowl, stir together the spices. Rub spice mixture evenly over shrimp coating the entire surface. Cover and refrigerate for 15 minutes to 1 hour to boost flavors. Grill over medium heat until cooked through.