United States

Whiskey Sour

Also known as Whisky Sour, Boston Sour

A sturdy, tart cocktail that balances the bite of whiskey with sharp citrus and a touch of sweetness.

whiskeysourcitrusfoamclassictartbourbonrefreshing

ABV

Difficulty

Overview

What this drink is like

The first sip hits you with bright, sharp lemon that quickly softens into the caramel and vanilla of the whiskey. The middle is a push-and-pull between the sour juice and sweet syrup, rounding out into a warm, slightly woody finish. If you use egg white, the texture turns silky and softens the bite.

Who will like it

For people who like tart, citrus-forward drinks but still want to taste the backbone of the spirit.

When to drink

This is a solid early evening drink, perfect for waking up your palate before dinner.

Ordering tip

Ask for it with egg white if you want a silky texture, or without if you prefer it sharper and more direct.

Ice: CubedTemp: ColdCost: $2–$4Glass: Old FashionedBatch-friendlyHome bar friendly

Flavor

Taste profile

This is a drink built on the push and pull of sharp lemon and sweet syrup, wrapped around the warmth of bourbon. The egg white softens the edges and gives it a velvety mouthfeel, while the whiskey brings enough oak and caramel to keep things grounded. It wakes up your palate with acid but leaves you with a warm, lingering finish.

Finish: The finish is warm and slightly woody, with the tartness of the lemon fading slowly into the caramel sweetness of the whiskey.

Primary tastes

soursweetfruity

Secondary

smokycreamy

Aroma

citrus oiloakvanillabaking spice

Bitternesslow bitterness
A tiny hint from the bitters and oak, but this drink leans sour and sweet.
Sweetnessmedium sweetness
The simple syrup balances the lemon juice without making the drink sugary.
Sournesshigh sourness
Sharp, bright lemon juice is the defining feature of the sour family.
Strengthmoderately strong
The whiskey stands up to the citrus, keeping the drink spirit-forward despite the mixers.
Refreshingfairly refreshing
The citrus and chill make it refreshing, though the whiskey gives it some weight.
Smokinessvery low smokiness
Just a faint char or oak note from the whiskey barrel, nothing smoky.
Creaminesslight body
The egg white adds a soft, silky texture, but it's still a light foam rather than a heavy cream.
Complexitymoderate complexity
A straightforward three-part balance of spirit, citrus, and sweet, with the whiskey providing most of the depth.

Recipe

Make it at home

Shaken · Old Fashioned · equal parts on Bourbon Whiskey. Rye whiskey works well too if you prefer a drier, spicier drink

Before you start

If you're using an egg white, make sure it's fresh and at room temperature so it foams up better. Juice the lemon right before making the drink.

Ingredients

Bourbon WhiskeyBase Spirit60ml
Fresh Lemon JuiceJuice30ml
Simple SyrupSyrup20ml
Egg WhiteoptionalDairyAdds a rich, silky foam on top1 egg white
Angostura BittersoptionalBittersDashed on top of the foam for aroma2 dashes
Lemon PeelGarnish1 twist

Garnish: Lemon twist, Maraschino cherry

Tools

Cocktail Shaker · Shaking
Shaking the ingredients with ice to chill, dilute, and create foam
At home: Mason jar with a tight lid
Hawthorne Strainer · Straining
Catching the ice while pouring the drink into the glass
At home: Slotted spoon
Jigger · Measuring
Measuring the whiskey, juice, and syrup accurately
At home: Measuring spoons or small measuring cup
Fine Mesh Strainer · optional · Straining
Straining out ice chips and fruit pulp for a smoother drink
Citrus Press · optional · Other
Extracting juice from the lemon
At home: Squeezing by hand

Steps

1
If using an egg white, crack it into the empty shaker first and add the whiskey, lemon juice, and simple syrup. Put the top on the shaker and shake hard for about 10 seconds without any ice to whip the egg into a thick foam. You'll feel the shaker get slightly warmer and hear the liquid sound thicker.
~10s
!Skipping the dry shake leaves the egg white flat and watery instead of frothy.
2
Take the lid off the shaker, fill it about three-quarters full with ice, and seal it tight. Shake hard again for 10 to 12 seconds until the outside of the shaker feels ice cold and frosty. If you skipped the egg white, just add all the ingredients straight to the ice and shake.
~12s
!Shaking too softly won't chill the drink fast enough or whip up the foam.
3
Pop the shaker open and pour everything through a Hawthorne strainer into a rocks glass filled with a large ice cube or fresh cubed ice. If you want a really smooth texture, hold a fine mesh strainer over the glass and pour through both strainers to catch any small ice chips.
!Pouring too slowly lets the foam separate and stick to the shaker instead of landing on top of the drink.
4
Take your lemon peel and give it a gentle twist over the surface of the drink so the citrus oils spray across the foam, then rub the peel along the rim of the glass and drop it in. Dash the Angostura bitters on top of the foam if you made one, drawing a quick pattern if you want.
!Squeezing the peel too hard drops bitter juice into the drink instead of just the aromatic oils.

Serve

Serve it right away in a rocks glass while it's still frosty cold, making sure the foam sits high above the rim if you used egg white.

Variations

Ingredient substitutions

Each row shows what you can swap in place of an original ingredient, and how the drink changes.

Swap options for Bourbon Whiskey

Bourbon WhiskeyRye Whiskey
Match
Common availability
Bourbon Whiskey → Rye Whiskey: Makes the drink drier and spicier, cutting through the sweetness more aggressively.

Swap options for Simple Syrup

Simple SyrupDemerara Syrup
Match
Specialty availability
Simple Syrup → Demerara Syrup: Adds a richer, deeper caramel flavor that pairs well with the whiskey.

Swap options for Egg White

Egg WhiteAquafaba
Match
Common availability
Egg White → Aquafaba: Creates a similar foam without animal products, though it tastes slightly more vegetal.

Similar cocktails

Cousin drinks that share DNA with this one — each profile stands on its own.

Similar cocktail

New York Sour

A New York Sour floats red wine on top, adding tannic, fruity notes.

Match

Both drinks share the same tart, whiskey-driven core, but the wine float on the New York Sour introduces a dry, fruity astringency that changes the finish entirely.

In common: Sour family structure, Citrus-forward, Shaken

Ingredients

Both share

Bourbon Whiskey, Fresh Lemon Juice, Simple Syrup

Only in New York Sour

Red Wine

The New York Sour uses the exact same whiskey sour base but adds a float of dry red wine over the back of a spoon, which bleeds into the foam.

Flavor

Shared flavors

Tart citrus backbone, Sweet bourbon warmth, Silky texture

How New York Sour differs

Tannic grip, Grape fruitiness, Drier finish

View recipe & details →

Similar cocktail

Amaretto Sour

Amaretto Sour uses amaretto liqueur as a primary ingredient alongside the whiskey, making it much nuttier and sweeter.

Match

While both are tart and whiskey-based, the amaretto version is sweeter and heavier, with a distinct almond flavor that softens the sharp edges of the lemon.

In common: Sour family structure, Shaken, Citrus-forward

Ingredients

Both share

Bourbon Whiskey, Fresh Lemon Juice

Only in Whiskey Sour

Simple Syrup

Only in Amaretto Sour

Amaretto

The Amaretto Sour swaps out the neutral sweetness of simple syrup for the thick, nutty sweetness of amaretto liqueur, often dialing back the syrup entirely.

Flavor

Shared flavors

Tart lemon bite, Whiskey warmth, Shaken chill

How Amaretto Sour differs

Nutty sweetness, Heavier body, Less sharp acidity

View recipe & details →

Similar cocktail

Pisco Sour

Pisco Sour uses pisco instead of whiskey, shifting the flavor from oaky caramel to bright, floral grape.

Match

Both drinks have the same frothy, tart profile, but the Pisco Sour is lighter and more floral, lacking the caramel and oak depth that whiskey brings.

In common: Sour family structure, Egg white foam, Shaken

Ingredients

Both share

Fresh Lemon Juice, Simple Syrup, Egg White

Only in Whiskey Sour

Bourbon Whiskey

Only in Pisco Sour

Pisco

The Pisco Sour keeps the sour template and egg white foam but swaps the entire base spirit from aged whiskey to unaged grape brandy.

Flavor

Shared flavors

Tart citrus profile, Silky egg white texture, Sweet-and-sour balance

How Pisco Sour differs

Floral and grassy notes, No oak or vanilla, Lighter body

View recipe & details →

History

Origin

The Whiskey Sour evolved from the traditional punch format of combining spirits, citrus, and sugar. The first printed recipe appeared in Jerry Thomas's 1862 Bartender's Guide, though the drink was likely mixed informally long before that.

Creator: Jerry Thomas (first printed recipe)
Era: 1860s
IBA: The Unforgettables
Data version: IBA current spec
Confidence

The IBA recipe omits egg white, but the Boston Sour variation with egg white is widely considered the standard craft preparation.

Practical

Tips & pitfalls

What works at home and what to skip when making this drink.

Tips

Worth knowing before you pour

Use fresh lemon juice; the bottled stuff tastes flat.
Dry shake first if using egg white to get a good foam.
Rye whiskey makes a drier, spicier drink than bourbon.

Avoid

Common mistakes

Shaking too softly leaves the egg white flat and watery.
Using cheap sour mix ruins the fresh taste.
Skipping the strainer lets ice chips water down the drink.