The Whisky Sour

Four ingredients, one shaking technique that divides opinion more than it should, and a decision between Bourbon and Scotch that changes the whole character of the drink. The Whisky Sour rewards attention without asking for reverence.

The Whisky Sour's exact origins are disputed in the way most nineteenth-century cocktails are disputed — a Wisconsin newspaper account from 1870 credits a shipping magnate's personal bartender in Iquique, Chile, with inventing it for a client who found whisky too harsh to drink neat; the Jerry Thomas bartending manuals of the same era treat the whisky-lemon-sugar combination as already established practice. What's not in dispute is that the drink has survived over 150 years essentially unchanged, and that it remains one of the clearest demonstrations that whisky doesn't need to be sipped neat in a Glencairn to be taken seriously. It is also, unlike most of the classics on this site, a genuinely playful drink — the egg white foam and the bitters garnish give it a presentation that borders on showmanship, and there's nothing wrong with that.

METHODOLOGY

1. Combine the whisky, lemon juice, simple syrup, and egg white in a cocktail shaker. Do not add ice yet.

2. Dry shake — shake the sealed shaker hard for 15 seconds with no ice inside. This is the step most home bartenders skip, and it's the one that makes the foam work: the vigorous agitation without ice denatures the egg white's proteins and builds the airy structure that will sit on top of the drink. Skipping this step and going straight to a shake with ice produces a thinner, less stable foam.

3. Add ice to the shaker and shake again, hard, for a further 15 seconds. This second shake chills and dilutes the drink properly while the foam structure built in the dry shake holds.

4. Strain into a rocks glass over one large ice cube, or into a chilled coupe if serving without ice. Pour with some height and a steady hand — this helps the foam separate cleanly and sit on top rather than mixing back into the drink.

5. Once the foam has settled on the surface, carefully place three dashes of Angostura bitters across it in a line or a simple pattern. The bitters sit on top of the foam rather than sinking, creating the drink's signature visual garnish, and add a light aromatic note as you drink.

6. Garnish with a Luxardo cherry on a pick, resting across the rim or dropped in. Serve immediately.