Sam Ross's modern classic from 2007. Equal parts bourbon, Aperol, Amaro Nonino, and lemon juice — a perfectly balanced, bittersweet tour de force.

• Bourbon2.25 cl
• Aperol2.25 cl
• Amaro Nonino2.25 cl
• Fresh lemon juice2.25 cl

1. 1Combine all ingredients in equal parts in a shaker with ice.
2. 2Shake vigorously for 15 seconds.
3. 3Double strain into a chilled coupe glass.
4. 4No garnish needed — the amber color does the work.