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.