Boston Sour
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Boston Sour
Cocktail recipe

Rating

4.56 / 5
The Boston Sour is a classic cocktail that enhances the traditional Whiskey Sour by adding a luxurious textural element through the inclusion of egg white. It's a harmonious blend of ... more The Boston Sour is a classic cocktail that enhances the traditional Whiskey Sour by adding a luxurious textural element through the inclusion of egg white. It's a harmonious blend of tart lemon juice, the sweetness of sugar syrup, and the rich, full-bodied complexity of bourbon. The addition of egg white creates a silky, frothy top layer, which not only adds a visual appeal but also a creamy mouthfeel that complements the sharpness of the citrus and the warmth of the whiskey. The Boston Sour is often served in a cocktail glass and is garnished with a lemon peel twist that adds an aromatic finishing touch to this sophisticated and balanced drink.
Check out all our FAQ's on this cocktail

Microbadges

Cocktail Of The Day
Invented
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(1862)
Base ingredient
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Bourbon
Garnish
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Lemon
Alcohol content
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21.24% | 2.4 units *
Details
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Classic
Shaken

Cocktail glass

Ingredients

oz
ml
cl
22.5ml ¾oz 2.3cl
15ml ½oz 1.5cl
60ml 2oz 6cl
1 egg white 1 egg white 1 egg white

Cocktail Colin says:

5/5

The Boston Sour is a delightful twist on the classic Whiskey Sour, adding a creamy, frothy dimension with the egg white that beautifully balances the sharpness of the lemon juice and the richness of bourbon. This cocktail mixes sweetness, acidity, and the velvety texture to create a sophisticated, multi-layered drink that comes alive with each sip, particularly suited for those who appreciate a deeper, aromatic cocktail experience.

Method
How to make a Boston Sour

Serves 1 · Takes 3 minutes
Add all the liquids and the egg white to a cocktail shaker with ice and shake well
Strain into a chilled cocktail glass and garnish with a lemon peel twist before serving

Learn more about some of the mixology terms used in this cocktail

·  Shake  ·  Strain  ·  Garnish  ·  Twist  · 

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FAQ's

GARNISHING_TIPS

What garnish is recommended for a Boston Sour?

A classic garnish for a Boston Sour is a cherry or a slice of orange. Sometimes, a lemon twist is also used to add a bit of elegance and to complement the citrus notes of the cocktail.

INGREDIENT_SUBSTITUTIONS

Can I make a Boston Sour without egg white?

Yes, you can make a Boston Sour without egg white, though the egg white is what gives the cocktail its distinctive frothy top and smooth texture. If you're avoiding egg white, you can use aquafaba (chickpea water) as a vegan alternative to achieve a similar frothiness.

ORIGINS_HISTORY

What is the history behind the Boston Sour?

The Boston Sour is an evolution of the classic Whiskey Sour, with the addition of egg white to create a frothier, smoother drink. It originated in the late 19th or early 20th century, when the practice of adding egg white to cocktails to enhance their texture was becoming popular. The 'Boston' distinction was likely added to associate the drink with a sense of refined sophistication.

FAQ

What is the best type of bourbon to use for a Boston Sour?

For a Boston Sour, it's recommended to use a bourbon that's well-balanced, with a good mix of sweetness and oakiness. A bourbon with a proof between 80 to 100 gives a nice balance without overpowering the other ingredients. Maker's Mark, Buffalo Trace, and Woodford Reserve are popular choices that complement the flavors of the cocktail.

FAQ

How do I know if the egg white is safe to use in a cocktail?

To ensure the egg white is safe to use, consider purchasing pasteurized eggs, which have been treated to kill bacteria without cooking the egg. Alternatively, you can use liquid egg whites that are sold in cartons and are pasteurized. Always store your eggs properly and use them before the expiration date to minimize the risk of salmonella.

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