Penicillin
The Penicillin was invented by bartender Sam Ross at Milk & Honey in New York in 2005 and has been called the most important modern cocktail. It combines blended Scotch with honey-ginger syrup and lemon, then crowns the drink with a float of smoky Islay Scotch. The result is a layered, warming cocktail that genuinely tastes like the cure for whatever ails you.
The Penicillin stands as modern mixology's greatest success story—a cocktail so perfectly balanced and brilliantly conceived that it earned its place among the classics within just a few years of creation. This smoky, citrusy elixir genuinely lives up to its medicinal name, offering comfort and complexity in equal measure. With its warming honey-ginger base crowned by a haunting float of peated Islay Scotch, the Penicillin delivers layers of flavor that unfold with each sip, making it both approachable for newcomers and sophisticated enough for seasoned whisky enthusiasts.

📝 Ingredients
- 0.75 oz Fresh Lemon Juice🛒 Amazon
- 0.75 oz Honey Syrup🛒 Amazon
Garnish: Candied ginger
👨🍳 Instructions
Combine the blended Scotch, fresh lemon juice, and honey-ginger syrup in a cocktail shaker filled with ice.
Shake vigorously for 12-15 seconds until well chilled.
Strain into a rocks glass over fresh ice (preferably a large cube).
Carefully float the smoky Islay Scotch on top by pouring it slowly over the back of a bar spoon.
Garnish with a piece of candied ginger on a cocktail pick. Serve immediately.
Flavor Profile
Tools Needed
Jigger
View on Amazon →Cocktail Shaker (Boston)
View on Amazon →OXO SteeL Cocktail Strainer (Hawthorne)
View on Amazon →Citrus Juicer
View on Amazon →Rocks Glass Set
View on Amazon →💡 Pro Tips
- 1
Use a quality blended Scotch like Famous Grouse or Monkey Shoulder for the base—avoid overly peated whiskies that will compete with the Islay float
- 2
Make fresh honey-ginger syrup by simmering equal parts honey and water with sliced fresh ginger for 10 minutes, then strain—the intensity makes all the difference
- 3
Float the Islay Scotch by pouring it slowly over the back of a bar spoon to create distinct layers and maximize the aromatic impact
- 4
Use a large ice cube to minimize dilution while keeping the drink properly chilled throughout the drinking experience
- 5
Garnish with candied ginger speared on a cocktail pick—it's both aromatic and edible, adding another layer of ginger complexity
📜 History & Origin
The Penicillin was born in 2005 at Milk & Honey, the legendary New York speakeasy that helped launch the modern craft cocktail movement. Created by bartender Sam Ross, this drink emerged during an era when bartenders were reimagining classic cocktail structures with contemporary techniques and ingredients. Ross drew inspiration from the Gold Rush cocktail and the Whiskey Sour, but his genius lay in adding the honey-ginger syrup base and the dramatic Islay Scotch float. The cocktail's name wasn't chosen lightly—like its medical namesake, it was designed to cure what ails you, particularly during cold winter months. The drink's impact was immediate and lasting. Within a decade, it had become a modern classic, appearing on cocktail menus worldwide and inspiring countless variations. The Penicillin's success helped establish the template for modern cocktail creation: taking classic structures and elevating them with quality ingredients, balanced flavors, and innovative presentation techniques.





