Boston Sour
A refined variation of the classic Whiskey Sour, distinguished by the addition of egg white which provides a rich, silky texture and a frothy head. This cocktail perfectly balances the warmth of blended whiskey with the tartness of fresh lemon and the sweetness of powdered sugar.
What it tastes like
This cocktail leads with a bright lemon aroma and a dense, frothy head. The palate features a balance of sharp citrus and the mellow grain notes of the blended whiskey, resulting in a rich, creamy mouthfeel. It finishes dry and clean with a soft, velvety texture on the tongue.
Flavour profile
Ingredients
- Blended whiskey2 oz
- Lemon juice0.5 oz
- Powdered sugar1 tsp
- Egg white1 whole
- Lemon1 slice
- Cherry1 whole
Preparation
- 1
Combine the blended whiskey, lemon juice, powdered sugar, and egg white in a cocktail shaker.
- 2
Add cracked ice to the shaker.
- 3
Shake vigorously for at least 15 seconds to emulsify the egg white and chill the drink.
- 4
Strain the mixture into a chilled sour glass.
- 5
Garnish with a slice of lemon and top with a cherry before serving.
Substitutions
- Blended whiskeyBourbon — Bourbon introduces stronger caramel and vanilla notes that make the drink taste richer and sweeter.
- Powdered sugarSimple syrup — Simple syrup integrates more quickly into the cold liquid and provides a more consistent sweetness.
- Egg whiteAquafaba — Two tablespoons of chickpea brine create a similar foam cap without using animal products.
- Lemon juiceLime juice — Lime provides a sharper, more punchy acidity that cuts through the whiskey more aggressively than lemon.
Variations
New York Sour
Float a half-ounce of dry red wine on top of the finished drink to add a fruity, tannic layer and a striking visual contrast.
Maple Boston Sour
Replace the sugar with maple syrup for a more robust, earthy sweetness that complements the oak in the whiskey.