Hot Apple Cider with Rosemary and Whiskey

Name: Hot Apple Cider with Rosemary and Whiskey
Prep time: 5 min
Cook time: 15 min
Total time: 20 min
Cuisine: European, American, British
Ingredients: 3 large sprigs of rosemary, roughly chopped – stems and all; 4 cups of apple juice (I prefer juice over cider because cider separates if it accidentally reaches a boil. Juice is a bit less finicky); 4 tablespoons of brown sugar; 4 ounces of whiskey (optional); More sprigs of rosemary to garnish, if desired