Ingredients
3/4 cup Nocello, or other walnut-flavored liqueur
1 1/2 cups whiskey or bourbon, such as Maker's Mark
3/4 cup Simple Syrup for Whiskey Sours
1/4 cup fresh lemon juice (from 2 lemons)
4 cinnamon sticks
Preparation
Bring Nocello, whiskey, simple syrup, and lemon juice to a simmer in a medium saucepan. Divide among 4 mugs, and garnish each with a cinnamon stick.