The Shamrock Smash is a gin drink, not a whiskey drink, and it is better for it. Gin and dry vermouth build the base, then muddled mint and cucumber turn it green without a drop of food coloring. Egg whites give it a foam cap that sits on top of the glass like a cloud. It looks refined, but it has a real kick underneath.
I first made this for a St. Patrick’s Day dinner where everyone expected green beer. The coupe glasses came out instead, pale green with white froth, and nobody went back to the beer. It has become the only drink I make for March 17th.
How to Make a Shamrock Smash
Muddle the Mint and Cucumber
Press 8-10 mint leaves and 4 cucumber slices in the bottom of the shaker with the simple syrup and lime juice. Firm presses, not shredding. You want the oils released, not green pulp floating in the drink. Five or six presses with a muddler is enough. 
The Dry Shake
Add the gin (60ml / 2 oz), dry vermouth (30ml / 1 oz), and egg whites to the shaker. Close it and shake hard for 15 seconds WITHOUT ice. This emulsifies the egg white into a foam. Skip this step and the drink will have no froth.
Then open the shaker, add ice, and shake again for another 15 seconds until the shaker frosts over. The double shake is what creates the silky texture and the pale green foam cap.
Strain into a Coupe
Use a fine mesh strainer to double-strain into a coupe glass. This catches the mint and cucumber solids so the drink is clean. The foam should sit on top like a cap, smooth and pale green. No garnish needed. The colour speaks for itself.
The Shamrock Smash: The Perfect St. Patrick’s Day Cocktail
- Total Time: 5 minutes
- Yield: Serves 1
- Diet: Omnivore
Description
A refreshing St. Patricks Day cocktail.
Muddle mint and cucumber, then shake with gin, vermouth, and lime.
Ingredients
- 2 oz (60 ml) Gin
- 1 oz (30 ml) Dry Vermouth
- 1 oz (30 ml) Simple Syrup
- 1 oz (30 ml) Lime Juice
- 8-10 Leaves Fresh Mint
- 4 Slices Fresh Cucumber
- 2 Egg Whites
Instructions
- Place mint leaves and cucumber slices into a cocktail shaker and muddle.
- Add the remaining ingredients to the shaker.
- Dry shake to froth the egg white.
- Add ice and shake until cold.
- Strain into a coupe glass.
Notes
- For a vegan option, omit the egg whites and shake vigorously with ice for a frothy texture.
- Adjust the simple syrup to your preferred sweetness. Start with ¾ oz and add more to taste.
- Store leftover simple syrup in an airtight container in the refrigerator for up to 2 weeks.
- Prep Time: 5 minutes
- Category: Cocktail
- Method: Shaking
- Cuisine: Irish
Nutrition
- Serving Size: 1 serving
- Calories: 250
- Sugar: 15
- Sodium: 2
- Carbohydrates: 20
- Fiber: 1
- Protein: 2
- Cholesterol: 40
Frequently Asked Questions
What gin works best for this?
A London Dry gin like Beefeater or Tanqueray. The botanical flavors pair well with the mint and cucumber. Avoid heavily juniper-forward gins, which can overpower the fresh ingredients.
Can I skip the egg white?
You can, but you lose the frothy texture that makes this drink special. The egg white does not add flavor. It adds body and that smooth foam layer on top. If you are concerned about raw egg, use pasteurized egg whites.
What can I use instead of dry vermouth?
Lillet Blanc or dry white wine work in a pinch. The vermouth adds a herbal, slightly bitter note that balances the sweetness of the simple syrup. Without it the drink leans too sweet.
