Rum is so summer-season. Break your New Year’s resolution in serious style with this indulgent treat.
Mix butter, brown sugar, and ground spices in a bowl. Transfer batter into an air-tight container and refrigerate for at least 1 hour.
Combine whiskey, 2 tablespoons of the batter, hot water, and whiskey into mason jar. Stir. Garnish with cinnamon sticks and star anise.