The Monte Carlo is a drink that hides in plain sight. On paper, it feels like an obvious extension of the Old Fashioned: whiskey, bitters, and Bénédictine for sweetness; and that single addition changes the drink completely. It introduces spice, honeyed depth, and an herbal warmth that lingers long after the last sip. It’s the difference between familiar comfort and something quietly transformative. And yet, the Monte Carlo never joined the pantheon of well-known whiskey classics. Under-o...