The Cardboard Plane Cocktail (Steve the Bartender)

So, here's a bit of a revised version of a paper plane cocktail. Very unique profile and super citrusy. Recipe 1 oz Bourbon Whiskey 3/4 oz Cointreau 1/2 oz Amaro Meletti 3/4 oz Lemon Juice 1/2 oz Grapefruit Juice