The Midnight Stinger is a a modern cocktail that was created by Sam Ross of Attaboy in New York City, New York. It's a variation of the iconic Stinger that turns the original into a Whiskey Sour by substituting whiskey in place of the classic brandy and adding citrus juice, sugar, and the bitter amaro Fernet-Branca.
Add whiskey, Fernet-Branca, lemon juice, and simple syrup to a shaker.
Fill shaker with cubed ice.
Shake for 10-20 seconds.
Fill a lowball glass with fresh crushed ice.
Using a Hawthorne strainer, strain into lowball glass.
Garnish with mint sprig.