Stout Whiskey Sour
Shake ∙ 3 min ∙ 16% ABV ∙
A Stout Whiskey Sour is a shaken Irish whiskey sour of lemon juice and sugar syrup, finished with a float of stout beer on top. A frothy, tart core turns rich and roasty toward the finish, the dark float adding a bittersweet, creamy layer over a brisk, chilled backbone.
Ingredients
1
Servings
Instructions for 1 serving
- Pre-chill a glass
- Shake the first 3 ingredients with ice: Irish whiskey 60 mlLemon juice 30 mlSugar syrup 20 ml
- Strain into the ice-filled glass
- Float Stout beer 20 ml
Tips
- Shake only the whiskey, lemon, and syrup hard with ice — the stout goes in after straining, never in the shaker.
- Use a stout with a dry, roasted character rather than a sweet one, since sugar syrup already carries the drink's sweetness.
- Pre-chill the glass before straining so the drink doesn't lose its chill while the stout is floated on top.
- Pour the stout slowly over the back of a spoon so it sits as a distinct layer instead of mixing straight into the sour.
History
The Stout Whiskey Sour adds a splash of stout beer to a classic Whiskey Sour, a modern bartender's tweak rather than a drink with its own documented creator, bar, or date; it appears mainly on contemporary cocktail menus and recipe sites as a variation on the standard sour rather than as a historically attributed invention.
The base drink, the Whiskey Sour, is generally traced to the sour family of drinks that 19th-century sailors mixed from spirits, citrus, and sugar to make rations more palatable and stave off scurvy. The first known printed reference appeared in Jerry Thomas's How to Mix Drinks, or the Bon-Vivant's Companion in 1862, and further mentions followed in an 1870 Wisconsin newspaper and a 1872 account crediting a bartender in Iquique, Peru. The Stout Whiskey Sour keeps that same whiskey-lemon-sugar structure but stirs in stout beer, giving the drink a darker color and a roasted, malty depth on top of the traditional sour profile.
FAQ
What are some common mistakes when making a Whiskey Sour?
The most common mistake is shaking all the ingredients together, which in this build muddies the stout float and flattens its head. Shake only the whiskey, lemon juice, and sugar syrup with ice, strain over fresh ice, then pour the stout on top. Other frequent errors are under-shaking, which leaves the sour thin and warm, and using bottled lemon juice, which reads flat next to fresh.
What's the secret to a perfect Whiskey Sour?
The secret is shaking the sour hard for proper chill and dilution, then floating the stout on top rather than mixing it in, so the beer's roasted bitterness stays distinct from the citrus underneath.
What alcohol is best for a Whiskey Sour?
This recipe uses Irish whiskey, which gives a lighter, smoother base than bourbon or rye and lets the lemon and stout float come through clearly. Bourbon brings more caramel sweetness and rye more spice, but the Irish whiskey here keeps the drink balanced rather than heavy.
What is the 3:2:1 Whiskey Sour ratio?
The 3:2:1 ratio is a classic Whiskey Sour formula of three parts whiskey, two parts lemon juice, and one part sugar syrup. This build follows that same proportion for its shaken base, then adds a stout beer float on top, which sits outside the traditional 3:2:1 formula.
