The Paper Plane, created in Chicago in 2008, has been described as a modern classic, and I won't argue. It's like a whiskey sour with more going on. The proper recipe asks for equal parts of four ingredients: bourbon (I recommend choosing something 100 proof or higher), Amaro Nonino* (an Italian bittersweet liqueur), Aperol, and lemon juice. I prefer it a touch less bitter and citrussy so my amended version dials down the Aperol and lemon.
Paper Plane
0.75 oz bourbon
0.75 oz Amaro Nonino
0.5 oz Aperol
0.5 oz lemon juiceShake ingredients furiously with ice and strain into a cocktail glass.
*Amaro Nonino is made from herbs, spices, fruit,
berries and roots enriched with a grape distillate, and aged more than 12 months in casks.