A Kahlúa Sour is the perfect mix of rich coffee flavor and bright citrus tang, creating a smooth, refreshing cocktail that’s both bold and easy to sip. Whether you’re winding down after dinner or looking for a unique drink to impress guests, this one’s a winner. I’ve made this countless times, and trust me—once you get the balance just right, it’ll become a favorite in your rotation.
Kahlúa Sour
Ingredients
You’ll need:
- 1.5 oz (45ml) Kahlúa – This coffee liqueur gives the drink its signature richness.
- 1 oz (30ml) fresh lemon juice – Freshly squeezed is key for the best bright, tangy flavor.
- 0.5 oz (15ml) simple syrup – Adds just the right amount of sweetness.
- 1 egg white (optional) – If you love a frothy, velvety texture, don’t skip this.
Equipment
- Cocktail shaker – For mixing everything together.
- Strainer – Helps get that smooth pour.
- Rocks glass – The best choice for serving, but a stemless wine glass works too.
How to Make a Kahlúa Sour
- In a cocktail shaker, combine the Kahlúa, lemon juice, and simple syrup.
- If using, add the egg white—this will give your drink a creamy, foamy top.
- Shake vigorously for about 10 seconds without ice (this is called a “dry shake” and helps build the froth).
- Add ice to the shaker, then shake again for another 15 seconds until well chilled.
- Strain into a rocks glass filled with ice.
That’s it! You’ve got a smooth, frothy, and balanced Kahlúa Sour ready to enjoy.
Tips & Tricks
- For extra froth, shake the egg white separately first (a trick I picked up after making this drink dozens of times).
- Want a deeper coffee kick? Add a shot of freshly brewed espresso.
- Prefer it less sweet? Cut back on the simple syrup or swap it for a splash of agave.
- No egg white? No problem—it’s optional! The drink will still taste fantastic, just without the creamy foam.
Serving Suggestions
This cocktail pairs beautifully with desserts and snacks that complement its bold flavors.
- Chocolate desserts – The coffee and chocolate combo is always a winner.
- Spicy appetizers – The citrusy tang helps cool down heat from spicy foods.
- Grilled meats – The acidity cuts through rich, smoky flavors perfectly.
I love sipping a Kahlúa Sour with a piece of dark chocolate—it’s a simple but indulgent treat.
Variations to Try
Want to mix things up? Here are a few ways to tweak your Kahlúa Sour:
- Espresso Kahlúa Sour – Add a shot of espresso for a bold coffee twist.
- Vanilla Kahlúa Sour – Swap simple syrup for vanilla syrup for a smooth, dessert-like finish.
- Spiced Kahlúa Sour – Add a pinch of cinnamon or nutmeg for a warm, cozy flavor.
For a non-alcoholic version, mix coffee-flavored syrup, lemon juice, and soda water—it’s a refreshing mocktail with all the flavor, none of the booze.
Common Questions
Can I make this without egg white?
Absolutely! It won’t have the frothy top, but the flavor stays the same.
How can I cut down on sweetness?
Try reducing the simple syrup or swapping it for a sugar-free option.
What’s the best time to serve a Kahlúa Sour?
It’s great as an after-dinner drink or a fun cocktail for a casual get-together.
Can I make this ahead of time?
It’s best fresh, but you can mix everything except the egg white and store it in the fridge for a few hours. Shake with ice before serving.
A Kahlúa Sour is a simple yet sophisticated cocktail that’s easy to make and even easier to love. Once you try it, you’ll see why it’s a favorite for coffee and cocktail lovers alike. Cheers! 🍸
