Rim a large coupe glass with a 1:1 brown sugar cinnamon mix. Combine all ingredients in a tin with ice. Shake and double strain into the rimmed large coupe glass. Garnish with a light dusting of nutmeg. 

(To make cinnamon syrup) 

1 cup water 

2 cinnamon sticks 

¾ cup sugar. 

In a small pot add the water and cinnamon sticks. Simmer for 10 minutes. Remove the cinnamon sticks and add the sugar. Stir until combined.