The Penicillin cocktail was created by Sam Ross in the mid-2000s, when he was working at New York City’s famous Milk & Honey bar. The drink quickly gained a foothold as a modern-classic cocktail. It’s now served around the world, proving its status as one of the 21st century’s biggest cocktail success stories.

In creating the drink, Ross decided to riff on the Gold Rush, another Milk & Honey original, that features bourbon, lemon juice and honey. He skipped the bourbon and instead opted to mix blended scotch with fresh lemon and a homemade honey-ginger syrup, which added sweetness and the classic bite of ginger. Ross then added a float of peaty scotch from Islay, an island known for producing smoky whiskies.

The blended scotch, lemon and sweetened syrup create balance in the drink, similar to that which you’ll find in a Whiskey Sour. The Penicillin is sweet, tart, spicy and delicious, garnished with a welcome snack of candied ginger. But that topper of Islay scotch is the genius behind the cocktail, keeping the spirit’s smoky aromatics front and center with each sip.

Référence : https://www.liquor.com/recipes/penicillin/