This Grapefruit Collins is bright, crisp, and just the right mix of tart, sweet, and bubbly. It feels a little special, but it’s so easy to make at home. I love this one when I want a cocktail that tastes fresh and not too heavy.
Why I Love This Recipe
I first made this Grapefruit Collins at home because I wanted that fresh, citrusy cocktail you get at a nice restaurant, but without it being too sweet. After testing a few versions, this one came out just right. It’s bright, crisp, smooth, and nicely bubbly.
I love how simple it is to make. You don’t need anything fancy, but it still looks beautiful and tastes balanced.
A few reasons I keep coming back to it:
- Fresh and light, not overly sweet
- Pretty pink color with bold grapefruit flavor
- Easy to make for a group
- Feels fancy, but comes together fast
- Rosemary adds a fresh finishing touch
What You’ll Need
- 2 ounces gin
- 2 ounces fresh grapefruit juice
- 1/2 ounce fresh lemon juice
- 1/2 ounce simple syrup
- 2 ounces chilled sparkling water or club soda
- 1 cup ice, plus more as needed
- 1 thin grapefruit wheel, for garnish
- 1 small fresh rosemary sprig, for garnish
Servings: 1 cocktail
Time: 5 minutes

Pro Tips
- Use fresh grapefruit juice. Bottled juice works in a pinch, but fresh juice gives the drink a brighter, cleaner flavor.
- Chill your sparkling water first. Cold bubbles stay lively longer and keep the drink crisp.
- Shake before you add the sparkling water. That keeps the soda fizzy instead of going flat in the shaker.
- Taste the grapefruit before mixing. Some grapefruits are sweeter and some are more bitter, so you can adjust the simple syrup a little if needed.
- Add the rosemary at the end and gently tap it once. That wakes up the aroma without making the drink taste too herbal.
Tools You’ll Need
- Tall Collins glass
- Cocktail shaker
- Jigger or small measuring tool
- Hawthorne strainer
- Citrus juicer
- Bar spoon
- Small knife, for the grapefruit garnish
Substitutions and Variations
- Swap gin for vodka if you want a softer, more neutral drink.
- Use honey syrup instead of simple syrup for a warmer sweetness.
- Try lime juice instead of lemon juice for a sharper citrus edge.
- Add a splash of elderflower liqueur for a floral twist.
- Use blood orange juice for part of the grapefruit juice if you want a sweeter citrus version.
- Make it booze-free by replacing the gin with a nonalcoholic gin alternative.
Make Ahead Tips
You can juice the grapefruit and lemon up to 1 day ahead and keep them in the fridge. You can also slice the grapefruit garnish ahead of time. For the best bubbles, wait to add the sparkling water until right before serving.
Why This Recipe Works (Quick Science)
Fresh grapefruit juice brings acid and a little bitterness, which helps the drink taste bright and refreshing instead of flat. Lemon juice sharpens that citrus flavor even more. Simple syrup smooths out the tartness so the drink tastes balanced. Gin adds herbal notes that pair really well with grapefruit. Sparkling water lifts everything up with bubbles, which makes the drink feel lighter and more refreshing on your tongue.
Recipe
- 2 ounces gin
- 2 ounces fresh grapefruit juice
- 1/2 ounce fresh lemon juice
- 1/2 ounce simple syrup
- 2 ounces chilled sparkling water or club soda
- 1 cup ice, divided as needed
- 1 thin grapefruit wheel
- 1 small fresh rosemary sprig
Instructions
Step 1: Juice and prep the garnish
Juice enough grapefruit to get 2 ounces fresh grapefruit juice. Juice enough lemon to get 1/2 ounce fresh lemon juice. Slice 1 thin grapefruit wheel for garnish and set out 1 small fresh rosemary sprig.

Step 2: Fill the shaker
Fill a cocktail shaker with about 1/2 cup ice. Pour in 2 ounces gin, 2 ounces fresh grapefruit juice, 1/2 ounce fresh lemon juice, and 1/2 ounce simple syrup.

Step 3: Shake
Seal the shaker and shake hard for 10 to 15 seconds, until the outside feels very cold.
Step 4: Fill the glass with ice
Add the remaining 1/2 cup ice, or enough to fill a tall Collins glass nearly to the top.
Step 5: Strain the drink
Strain the shaken mixture of 2 ounces gin, 2 ounces fresh grapefruit juice, 1/2 ounce fresh lemon juice, and 1/2 ounce simple syrup over the ice in the Collins glass.
Step 6: Top with bubbles and garnish
Pour 2 ounces chilled sparkling water over the drink. Give it one gentle stir. Garnish with 1 thin grapefruit wheel and 1 small fresh rosemary sprig.

Common Mistakes
- Using bottled grapefruit juice can make the drink taste dull or overly bitter.
- Adding sparkling water to the shaker will flatten the bubbles.
- Using too much simple syrup can cover up the fresh citrus flavor.
- Not using enough ice can water the drink down faster.
- Skipping the garnish may seem small, but it really adds aroma and makes the cocktail feel finished.
What to Serve With
This cocktail is great with light, salty, or fresh foods. Try it with shrimp cocktail, crostini, smoked salmon, a cheese board, roast chicken sliders, or a simple arugula salad. It also works really well with brunch foods like quiche or avocado toast.
Leftovers and Storage
This drink is best made fresh. If you want to prep ahead, store the grapefruit juice and lemon juice in the fridge for up to 1 day. You can also mix the gin, grapefruit juice, lemon juice, and simple syrup ahead and chill it for a few hours. Add ice, sparkling water, and garnish only when serving.
Macros Information
Approximate per serving:
- Calories: 185
- Carbohydrates: 11g
- Sugar: 9g
- Fat: 0g
- Protein: 0g
- Fiber: 0g
- Alcohol: about 1.3 standard drinks
These numbers can change a little based on your gin, grapefruit, and sweetener.
FAQ
Can I use ruby red grapefruit?
Yes. Ruby red grapefruit is great here. It usually gives you a sweeter, slightly less bitter drink and a prettier pink color.
Can I make this without a shaker?
Yes. Stir the gin, grapefruit juice, lemon juice, and simple syrup well with ice in a large glass or jar, then strain into your serving glass.
What kind of gin works best?
A clean London dry gin works really well, but a softer botanical gin is also nice. Pick one you already enjoy drinking.
Is this drink very sweet?
No. It’s more bright and balanced than sweet. You can add an extra 1/4 ounce simple syrup if your grapefruit is very tart.
Can I make a pitcher?
Yes. Multiply the gin, grapefruit juice, lemon juice, and simple syrup by however many servings you need. Chill that mixture, then pour over ice and top each glass with sparkling water right before serving.
Final Thoughts
This Grapefruit Collins is one of those easy drinks that feels a little special without making extra work. It’s fresh, crisp, and simple to pull together, which is exactly why I keep coming back to it. Make it once, and it might end up being your go-to cocktail too. If you try it, leave a comment and share how it turned out or any twists you added.

