Espresso Martini, No Coffee

The Espresso Martini is defined by coffee — but what is the coffee doing there? Three things: roasted bitterness, aroma, and the caffeine lift. The rule we break: that only coffee can do that job. Toasted barley, cacao husk or a strong black tea give the roast and the bitterness; the lift, if you want it, comes from a maté or guaraná liqueur.

The Break-a-classic lesson: the ingredient that names a classic is usually a role, not an identity. Swap it for another that plays the same role and the cocktail is still itself — same dark silhouette, same foam, same punch.