This Grapefruit Rosemary Gin Sour is bright, fresh, and easy to make. The tart grapefruit, fresh rosemary, smooth gin, and creamy egg white create a beautiful cocktail with a silky foam. It looks fancy, but it comes together in just a few minutes.
Why I Love This Recipe
The first time I made this drink, I wanted something fresh without being too sweet. I had grapefruit, a few rosemary sprigs, and a bottle of gin. After a little testing, this became the version I kept coming back to. The rosemary adds a light herbal smell, while the grapefruit keeps every sip bright and refreshing. It feels special enough for guests but simple enough for a relaxing evening at home.
- Fresh grapefruit gives natural citrus flavor.
- Rosemary adds a light herbal touch.
- Egg white creates a smooth, creamy foam.
- Easy to make in about 10 minutes.
- Beautiful enough for parties and holidays.
Servings and Time
- Servings: 2 cocktails
- Prep Time: 10 minutes
- Cook Time: 5 minutes
- Total Time: 15 minutes
What You’ll Need
- 4 ounces gin
- 3 ounces fresh grapefruit juice
- 1 ounce fresh lemon juice
- 1 ounce simple syrup
- 1 egg white
- 2 small fresh rosemary sprigs, plus 2 more for garnish
- 2 thin grapefruit slices for garnish
- Ice cubes

Pro Tips
- Use freshly squeezed grapefruit juice for the best flavor.
- Dry shake first without ice to build a thick foam.
- Shake again with ice until the shaker feels very cold.
- Lightly clap the rosemary between your hands before garnishing to release more aroma.
Tools
- Cocktail shaker
- Jigger
- Fine mesh strainer
- Citrus juicer
- Sharp knife
- Cutting board
- Coupe glasses
Substitutions and Variations
- Use vodka instead of gin.
- Replace grapefruit with blood orange for a sweeter drink.
- Use aquafaba instead of egg white.
- Add a splash of sparkling water for a lighter cocktail.
Make Ahead Tips
- Juice the grapefruit and lemon up to 2 days ahead.
- Make simple syrup up to 2 weeks ahead and refrigerate.
- Garnishes can be sliced a few hours before serving.
Recipe
Step 1: Juice the Citrus
Squeeze 3 ounces of fresh grapefruit juice and 1 ounce of fresh lemon juice. Strain out the seeds and large pieces of pulp.
Step 2: Add Everything to the Shaker
Pour 4 ounces gin, 3 ounces fresh grapefruit juice, 1 ounce fresh lemon juice, 1 ounce simple syrup, 1 egg white, and 2 small fresh rosemary sprigs into the cocktail shaker without ice.
Step 3: Dry Shake
Seal the shaker and shake without ice for about 20 seconds to build a creamy foam from the egg white.
Step 4: Shake with Ice
Open the shaker, add 1 cup ice cubes, close it, and shake for another 20 to 30 seconds until very cold.
Step 5: Strain and Garnish
Double strain the cocktail into 2 coupe glasses. Garnish each drink with 1 fresh rosemary sprig and 1 thin grapefruit slice.

Why This Recipe Works (Quick Science)
The egg white traps tiny air bubbles during shaking, making a thick, creamy foam. Fresh citrus balances the sweetness of the simple syrup. Gin brings botanical flavors that pair naturally with rosemary and grapefruit.
Common Mistakes
- Using bottled grapefruit juice instead of fresh.
- Skipping the dry shake.
- Not shaking long enough with ice.
- Using too much rosemary, which can overpower the drink.
- Forgetting to strain, leaving small ice chips in the cocktail.
What to Serve With
- Cheese board
- Smoked salmon crackers
- Roasted nuts
- Shrimp cocktail
- Grilled chicken skewers
- Marinated olives
Macros Information
Per serving (approximate)
- Calories: 210
- Protein: 3g
- Carbohydrates: 10g
- Fat: 0g
- Sugar: 8g
- Fiber: 0g
- Alcohol: Approximately 2 ounces gin
Leftovers and Storage
This cocktail is best served right away. You can prepare the citrus juice and simple syrup ahead of time, but shake the drink just before serving for the best foam.
FAQ
Q: Can I make it without egg white?
A: Yes. Use 1 ounce aquafaba instead, or leave it out if you do not want the foam.
Q: Can I make a large batch?
A: Yes. Mix everything except the egg white ahead of time. Shake each serving with egg white and ice before serving.
Q: What gin works best?
A: A classic London Dry gin gives the cleanest flavor, but any good-quality gin works well.
Q: Can I use bottled grapefruit juice?
A: Fresh juice gives the brightest flavor, but bottled juice can be used if needed.
Final Thoughts
This Grapefruit Rosemary Gin Sour is simple, refreshing, and full of fresh citrus flavor. The creamy foam, bright grapefruit, and fresh rosemary make every sip feel special. Whether you are serving guests or enjoying a quiet evening, this cocktail is easy to make and always looks impressive. Give it a try and enjoy every refreshing sip.

