Updated May 25, 2026 by George Ciuciureanu, co-founder of Thirsty Bartender.
What is a Whiskey Sour, and how do you make one?
A classic Whiskey Sour is 1.5 oz whiskey, 1/2 oz freshly squeezed lemon juice, and 3/4 oz simple syrup, shaken hard with ice and strained into a chilled coupe or over fresh ice in a rocks glass. Egg white is optional. The drink takes two minutes to build and lands somewhere between bright, balanced, and unmistakably whisky.
The cocktail has been around since the 1860s. It survived Prohibition, weathered every cocktail revival since, and still shows up on every serious cocktail menu in Toronto. The reason it sticks is that the three core elements (spirit, citrus, sugar) are the foundation every other sour stands on. Get the Whiskey Sour right and you understand how a Daiquiri, a Margarita, and a Tom Collins all work.
A note on the ratio. The textbook Whiskey Sour goes 2 oz whiskey to 3/4 oz lemon to 3/4 oz simple syrup. That builds a slightly heavier, sweeter drink. The version above (1.5 / 0.5 / 0.75) is the ratio we use in our Whiskey Sour Kit, calibrated so the whisky still leads but the lemon stays crisp. Both are right. Pick the one that matches your night.
What makes a great Whiskey Sour?
A Whiskey Sour is whisky, fresh lemon, and simple syrup, shaken with ice and strained. The whole game is in the three ingredients you can't fake: a whisky that's expressive enough to taste through the citrus, lemon juice squeezed within the hour, and a simple syrup made from real sugar, not corn syrup. Skip any of those and you get something that's technically a Whiskey Sour and emotionally a wet napkin.
Shake harder than feels reasonable. The dilution and aeration from a proper shake are what give the drink its lift. A weak shake in a half-empty shaker gets you a flat, syrupy mess.
There are two right ways to serve it. The formal one lives in a coupe glass: this is the cocktail-bar serve, no ice in the glass, the chill comes from the shake. The casual one lives on the rocks: one big cube, served in a tumbler, slower to drink, slower to dilute. Both are correct. Choose based on the room.
The classic Whiskey Sour recipe
Yield: 1 cocktail
Prep time: 2 minutes
Difficulty: Easy
Glass: Coupe (classic) or rocks (casual)
Ingredients
- 1.5 oz whiskey (Jameson Irish for the classic, Glenfiddich 12 Speyside Scotch for richer)
- 1/2 oz freshly squeezed lemon juice
- 3/4 oz simple syrup (one part sugar, one part water, dissolved)
- 1 egg white (optional, for a silkier texture)
- Ice
- Garnish: lemon peel or a Luxardo maraschino cherry
Method
- Add whiskey, lemon juice, and simple syrup to a shaker. If using egg white, add it now.
- If using egg white, dry shake (no ice) for 15 seconds first. This builds the foam.
- Add ice. Shake hard for 12 to 15 seconds. The shaker should be painfully cold to the touch.
- Strain into a chilled coupe, or over a single large cube in a rocks glass.
- Garnish with a lemon peel or a Luxardo cherry. Serve immediately.
What's in our Whiskey Sour Kit
- The whisky (Jameson Irish in the standard kit, Glenfiddich 12 Speyside in the premium)
- Small-batch simple syrup, made in Toronto
- Fresh lemons
- Luxardo maraschino cherries for garnish
- A printed recipe card with ratios calibrated to the kit, including a scaling guide for bigger batches
The kit ships across the GTA, next-day with our 5 PM cutoff. Sizes scale with the night: 4 drinks, 8 drinks, or 16 drinks.
We tested whiskies across categories before landing on the pair. Jameson Irish gives the classic version a soft, approachable backbone, the kind of drink that works at brunch or after dinner without arguing with the food. Glenfiddich 12 from Speyside takes it somewhere richer, with orchard fruit and a touch of honey, never smoky, never aggressive. Two roads, both correct, depending on the mood.
The kit isn't built for the home bartender who already keeps a stocked shelf and three syrups they made from scratch last weekend. It's built for the host who wants the night to feel intentional without losing Saturday morning to the LCBO and Saturday afternoon to ratios.
What are popular Whiskey Sour variations?
There are three variations worth knowing. Each uses the same base ratios as the classic, with one ingredient swap that changes the whole personality of the drink.
The New York Sour. Make the classic, then carefully float about half an ounce of dry red wine over the back of a spoon so it sits on top. The wine adds a dark, almost berry-like top layer that drinks like dessert. Looks dramatic, tastes more refined than it has any right to.
The Rye Sour. Reach for Canadian rye instead. Lot 40 or Crown Royal Northern Harvest both work. Rye is spicier and drier than Irish, so the sour reads sharper, with a kick of black pepper on the finish. A great winter version.
The Smoked Sour. Reach for Islay Scotch (Laphroaig, Ardbeg). Polarizing. People who love it think it's the best thing the cocktail can do, the smoke wrapping around the citrus like a wool coat. People who don't will hand it back. Make one and decide for yourself.
Whiskey Sour FAQ
Is the egg white safe to drink raw?
Modern eggs from a reputable source carry an extremely low risk of salmonella, especially when shaken with citrus, which lowers pH and is hostile to bacteria. If you're pregnant, immunocompromised, or feeding someone who is, skip the egg white or substitute aquafaba (the liquid from a can of chickpeas) for the same silky texture.
What's the difference between a Whiskey Sour and a Boston Sour?
A Boston Sour is a Whiskey Sour with egg white. Same recipe, same ratio, plus one egg white and a dry shake. The egg white gives the drink a thick foamy crown and a softer, almost creamy mouthfeel.
What's the best whiskey for a Whiskey Sour?
For the classic version, Irish whiskey is the safest call. It's smooth, lightly sweet, and lets the lemon shine. Jameson is what we use in our kit for exactly that reason. If you want a richer, more layered drink, reach for a Speyside Scotch like Glenfiddich 12. Avoid anything heavily peated for the standard version unless you specifically want the Smoked Sour variation.
With or without egg white?
Both are correct. With egg white, you get a thicker, silkier drink with a foamy top. Without egg white, you get a cleaner, brighter, more lemon-forward version. Try both and pick your side.
What kind of simple syrup should I use?
Equal parts white sugar and water, dissolved over low heat and cooled. Demerara sugar makes a richer syrup that pairs especially well with Scotch versions. Skip honey syrup unless you're going for a Gold Rush, which is a different drink.
Why is there no Angostura bitters in your kit?
The classic Whiskey Sour doesn't require bitters. Some bars dash a few drops on top of the foam for decoration, but the drink is built on lemon, sugar, and whisky. If you want bitters, add them yourself. Our kit ships the ingredients the drink actually needs.
Can I batch a Whiskey Sour for a party?
Yes. Pre-mix the whisky and simple syrup up to 24 hours ahead and refrigerate. Add freshly squeezed lemon juice no more than one hour before serving. Citrus oxidizes quickly. If you're using egg white, shake each drink individually so the foam holds.
How can I order a Whiskey Sour Kit in Toronto?
Order before 5 PM on our site and we deliver across the GTA the next day. The kit arrives with the whisky, the syrup, fresh lemons, Luxardo cherries, and a recipe card. Toronto, Mississauga, Etobicoke, Scarborough, North York, Vaughan, and Markham all covered. The alcohol is included.