The Whiskey Sour is a template as much as a recipe. Two parts whiskey, three-quarters of a part each of fresh lemon juice and simple syrup, shaken hard — swap the whiskey and the frame holds, but the drink changes character. Rye gives the dry, peppery version RyeCentral builds around; bourbon rounds it and is what the IBA, Difford's and PUNCH all print by default; Scotch takes the template somewhere else entirely, and its most famous sour is not called a Whisky Sour at all but a Penicillin. Irish, Japanese and Canadian whiskies each produce a recognizable sour with its own balance to solve.

One rule governs this page. The ratio and the sweetener come from the research behind the canonical recipe, and they are adjusted per spirit only where a published spec supports it. Where none does, we describe what the whiskey does to the drink and leave the numbers alone. Rye remains the reference — the structural case is made elsewhere — and every other build is described by how it departs from it.

Quick-Reference: Every Whiskey at a Glance

Rye: The Reference

Everything on this page is measured against the rye Whiskey Sour, and the record backs that choice as well as the house preference does. Jerry Thomas's 1887 recipe calls for "1 wine-glass of Bourbon or rye whiskey" — both grains are original. When PUNCH convened a judging panel in 2017, both judges thought rye the stronger choice, with more presence against egg white, and the winning drink was built on 2 oz of a 100-proof rye. Rye's pepper and dryness cut through lemon and sugar where a soft whiskey disappears, which is why the house build asks for 100 proof if possible. The rye Whiskey Sour recipe is the canonical build, the Bottle Library ranks the bottles, and the Rye Whiskey Sour: Why Rye gathers the whole rye case in one place.

Bourbon: The Published Default

Open almost any reference and the Whiskey Sour is a bourbon drink: PUNCH's recipe, Difford's and the IBA all specify it. Corn sweetness and vanilla oak make a rounder, friendlier sour with a shorter finish, and the published specs show how bartenders compensate. PUNCH keeps the 2 : ¾ : ¾ ratio. Difford's tunes its preferred 6:3:2 formula — 2 oz bourbon, 1 oz lemon, ⅔ oz rich 2:1 syrup — for "a wheat-forward straight bourbon whiskey with a 45% alc./vol." and reports that an 8:3:2 test came out "a little more whiskey-forward" with the lemon "noticeably diminished." The IBA's 45 : 25 : 20 ml runs slightly tarter than either. PUNCH's 2024 co-favorite, Alicia Perry, split the base an ounce each of bourbon and rye; PUNCH's 2017 judges had already noted that "a high-proof bourbon could also do a stand-up job" against egg white. Recipe and adjustments: bourbon Whiskey Sour; the direct comparison: bourbon vs rye Whiskey Sour.

Scotch: The Penicillin's Territory

A plain Scotch sour — blended Scotch, lemon, sugar — works, and a blended malt's honey and cereal notes sit comfortably against lemon. But the Scotch sour that matters is the Penicillin, created by Sam Ross at Milk & Honey in New York in 2005 and popularized at Little Branch: 2 oz blended Scotch (Ross's spec names Famous Grouse as an example), ¾ oz honey-ginger syrup, ¾ oz fresh lemon juice, shaken and strained over one large cube, with ¼ oz of Islay single malt floated on top and a piece of candied ginger to garnish. The honey-ginger syrup is a cup of honey, a 6-inch piece of peeled, sliced ginger and a cup of water, simmered five minutes and steeped overnight. It is the Gold Rush template moved to Scotch, with ginger in the honey and peat on the nose — Ross has said the Gold Rush was part of the inspiration. If you want a Scotch sour, make this one.

Irish Whiskey

Our research file carries no published Irish whiskey sour spec, so this section describes character rather than numbers. Irish whiskey's lighter, smoother, often triple-distilled profile lets the lemon lead: the sour reads cleaner and more citrus-forward than the rye or bourbon versions, with less of the spice that ties the drink together. A pot-still Irish whiskey, with its oily weight and orchard fruit, stands up to lemon and sugar far better than a light blend. Start at the house ratio and taste; egg white suits this version well because the whiskey has little aggression for the foam to soften.

Japanese Whisky

Again no published spec in our file; character only. Japanese blends and single malts tend toward delicacy — floral, lightly oaked, precise — and the risk in a sour is that lemon and sugar cover exactly what you paid for. The drink that results is quieter and more aromatic than the American versions, and it rewards a careful shake, a fine strain and a lemon twist rather than a cherry. A heavier, sherried Japanese malt behaves more like a Scotch and takes the template without fuss. For the lightest expressions, the honest advice is to drink them neat and build the sour on rye.

Canadian Whisky

No published spec here either, and the category is too wide for one rule. Light Canadian blends make a soft, sweet sour that lemon dominates; the rye-heavy Canadian bottles — some are 90% or 100% rye mash — behave much like American straight rye and make an excellent sour at the house ratio. The word "rye" on a Canadian label does not guarantee much rye in the bottle, so read the mash bill and judge by proof. The strength question matters more in a sour than in a stirred drink, because the shake adds its own dilution on top of the juice and syrup — see Whiskey Sour ratios explained.

How to Adapt the Build for Any Whiskey

1. Start at 2 : ¾ : ¾ and taste. That is the ratio PUNCH's judges agreed on and the one the house recipe uses. Difford's 2 : 1 : ⅔-rich is the published alternative for bourbon — with 1:1 syrup that is 2 : 1 : 1, the same balance with more of both.
2. Spend on proof, not prestige. The shake dilutes the whiskey, then the lemon and syrup dilute it again. The house build asks for 100 proof if possible; PUNCH's 2017 winner used exactly that.
3. Decide on egg white by the whiskey's weight. Rye and high-proof bourbon have the presence to carry foam; PUNCH's judges found rye the stronger choice there. Lighter whiskies taste cleaner without it.
4. Keep the method. Shake hard with plenty of ice; with egg white, add a shake without ice before or after — how to shake a Whiskey Sour — whatever the whiskey.
5. Pick the garnish by the serve. Lemon wheel and cherry on the rocks; lemon twist and a few dashes of Angostura on the foam up; the IBA's orange half-slice and cherry if you want the classic flag — Whiskey Sour garnish.

Where to Go Next

The egg-white, sweetener and modifier variations live in Whiskey Sour Variations; every recipe in the corner is indexed in the Recipe Room; the sour's relatives on other spirits — the Margarita and the Pisco Sour — are compared in the Tasting Bar; and the Manhattan's spirit tour, which covers the same whiskies in a stirred drink, is at Manhattan by Spirit.

Frequently Asked Questions

Can you make a Whiskey Sour with any whiskey?

Yes. Rye is RyeCentral's house base and bourbon is the published default; Scotch, Irish, Japanese and Canadian whiskies all work. Start at 2 oz whiskey, ¾ oz lemon, ¾ oz simple syrup and adjust from there.

What is a Whiskey Sour made with Scotch called?

A Scotch sour, plainly — but the famous one is the Penicillin: blended Scotch, honey-ginger syrup and lemon with an Islay float, created by Sam Ross at Milk & Honey in 2005.

Rye or bourbon for a Whiskey Sour?

Both are original — Jerry Thomas's 1887 guide says "Bourbon or rye." The IBA, Difford's and PUNCH default to bourbon; PUNCH's 2017 judges preferred rye for its presence against egg white, and the winner used a 100-proof rye.

Which whiskey makes the sweetest Whiskey Sour?

Bourbon, or a light Canadian blend. Difford's tunes its 6:3:2 — 2 oz bourbon, 1 oz lemon, ⅔ oz rich syrup, which equals 1 oz simple — for a 45% wheat-forward bourbon; to make a sweet bourbon less sweet, cut the syrup toward ½ oz, as PUNCH's 2017 runner-up did.

Which whiskey makes the driest Whiskey Sour?

A 100-proof straight rye. Its pepper and dryness register through the lemon and sugar, which is why PUNCH's judges called it the stronger choice.

Can you make a Whiskey Sour with Japanese whisky?

Yes, though the lightest expressions get lost under lemon and sugar. A heavier or sherried Japanese malt takes the standard build; finish with a lemon twist rather than a cherry.

Frequently Asked Questions (Voice Search)

What whiskey is best for a Whiskey Sour?

A 100-proof straight rye for a dry, spicy sour that holds up to egg white; bourbon for a rounder, sweeter one. Both are historically correct.

What is a Penicillin cocktail?

Blended Scotch, honey-ginger syrup and fresh lemon — 2 oz, ¾ oz, ¾ oz — shaken, served on a large cube with ¼ oz of Islay Scotch floated on top and candied ginger. Sam Ross, Milk & Honey, 2005.

What is the difference between a rye and a bourbon Whiskey Sour?

The grain. Rye is drier and peppery and keeps its presence through lemon, sugar and foam; bourbon is rounder and sweeter and is what most published recipes specify.

Can you make a Whiskey Sour with Irish whiskey?

Yes. It makes a lighter, cleaner, lemon-led sour; a pot-still Irish whiskey has more weight for it than a light blend.