Chill the Glass Place your coupe glass in the freezer for 5–10 minutes, or fill it with ice and water while you prepare the drink. 

Combine Ingredients Add the whiskey, cinnamon syrup, Licor 43, half and half, and bitters into a cocktail shaker.

Chill and Aerate Fill the shaker with plenty of ice. Shake vigorously for about 15–20 seconds.

Strain Double strain into your coupe glass to ensure a silky texture without ice shards.

Garnish with Flair Gently sprinkle the purple, gold, and green edible glitter over the top of the foam. You can do this with a stencil or freeform.