Ingredients for Dry Rub 2   Tablespoons salt 2   Tablespoons black pepper 2   Tablespoons chili powder 2   teaspoon coriander 1   Tablespoon garlic 2   teaspoon ground mustard ———————————— 1   12 oz. can Guinness Beer 1   5 lb. Pork Butt  (Shoulder) Combine all rub ingredients and rub all over the pork. Wrap in plastic wrap and let sit [...]