Fall-Off-The-Bone Beer Can Chicken

Ingredients : 2 tablespoons garlic powder ½ (12 fluid ounce) can or bottle beer 1 (4 pound) whole chicken giblets discarded or more to taste ½ cup butter 2 cloves garlic smashed 3 tablespoons brown sugar 1 tablespoon paprika 1 tablespoon ground black pepper 1 teaspoon salt 2 tablespoons onion...