Grilled Vinegar Turkey With Chiles and Rosemary

Name: Grilled Vinegar Turkey With Chiles and Rosemary
Ingredients: 6 Tbsp. Diamond Crystal or 3 Tbsp. plus 1½ tsp. Morton kosher salt; 3 Tbsp. paprika; 2 Tbsp. light or dark brown sugar; 1 Tbsp. freshly ground black pepper; 1¼ tsp. ground cinnamon; 1 12–14-lb. turkey, backbone removed, halved along breastbone; 3 Tbsp. extra-virgin olive oil, plus more for grill; 2 red Fresno chiles or jalapeños, thinly sliced; 2 cups sherry vinegar or red wine vinegar; ½ tsp. Diamond Crystal or ¼ tsp. Morton kosher salt, plus more; 6 large sprigs rosemary; ½ cup (1 stick) unsalted butter, cut into 1 pieces; 1 Tbsp. Worcestershire sauce