The inherent smoothness of Gentleman Jack makes it the ideal candidate for a Whiskey Sour. Its refined character shines through without being overpowered by the acidity of fresh citrus.
Combine two ounces of Gentleman Jack with three-quarters of an ounce of fresh lemon juice and half an ounce of simple syrup in a shaker. Add an egg white if you prefer a luxurious, frothy texture.
Shake vigorously with ice until well-chilled and strain into a chilled coupe glass. Garnish with a maraschino cherry to complete this sophisticated, timeless cocktail.