Build at a glance
This version uses 5 ingredients across 6 steps. For a home bar, that makes it a little more hands-on rather than fussy.

The Boston Sour is a whiskey sour cocktail recipe made with bourbon, lemon juice, and egg white. This frothy sour cocktail features whiskey, citrus, and tart flavors with a silky foam top. A variation of the classic Whiskey Sour, the Boston Sour is perfect for bourbon lovers seeking elevated mixed drinks.
Glass:
Tumbler
Strength
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Add bourbon, fresh lemon juice, sugar syrup, and egg white to a shaker.
Dry shake vigorously without ice to emulsify the egg white.
Add ice and shake again until well chilled.
Fine strain into a tumbler.
Add 2 dashes of Angostura bitters on top of the foam.
Garnish with an orange zest.
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Editorial Notes
The Boston Sour combines Bourbon, Lemon Juice, and Sugar Syrup. These quick notes add context on structure, flavor, and where the drink fits best.
Updated Dec 22, 2025 • 5 ingredients • 6 steps
This version uses 5 ingredients across 6 steps. For a home bar, that makes it a little more hands-on rather than fussy.
Expect spirit forward, tart, and citrusy notes. Served in a Tumbler, the drink lands balanced rather than aggressive and keeps its structure clear.
This style fits weekend mixing and reliable home-bar service. If you already enjoy Whiskey cocktails, it is an easy recipe to keep in rotation.