This refreshing gin and grapefruit cocktail is the perfect way to relax at the end of the day. Made with fresh grapefruit and your gin of choice, you will love this recipe all year round!

Grapefruit Collins Cocktail with Rosemary Simple Syrup on silver coaster.

A Perfectly Refreshing Gin and Grapefruit Cocktail

This cocktail recipe was born out of a desire to refresh the collins. The combination of gin and grapefruit in this refreshing citrus cocktail is one way to get me to eat (or rather, drink!) Ruby Reds.

If you really want to take this cocktail recipe to the next level, use rosemary syrup to sweeten the drink! This recipe is a great twist on the classic, and I hope you enjoy!

Ingredients for the Grapefruit and Gin Cocktail

  • Fresh squeezed grapefruit juice: fresh squeezed is always best! However you can certainly use store bought.
  • High quality gin: I absolutely love Uncle Val’s gin, but whatever you prefer will be delicious.
  • Simple syrup: You can make your own with 1:1 parts sugar and hot water, or try an herb infused simple syrup.
  • Soda Water: I love topping cocktails with soda water to make the cocktail a spritz!

What type of gin is best?

I personally love Uncle Val’s Botanical Gin, it’s hands down my favorite gin! The botanical flavors are fantastic and it feels light and herbal. Perfect with a rosemary simple syrup or with golden berries!

Where to get grapefruit juice?

Making your own fresh squeezed grapefruit juice will make your cocktails feel elevated and take them to the next level! If you want restaurant quality cocktails, making your own juices and syrups is a great way to achieve that!

Grapefruit Collins Cocktail with Rosemary Simple Syrup on silver coaster.

Looking for more refreshing cocktail recipes? Try our Coconut & Guava drink or a Summer Mule at your next BBQ!

The Recipe

Grapefruit Collins Cocktail with Rosemary Simple Syrup on silver coaster.

Gin Grapefruit Cocktail

This delicious gin grapefruit cocktail is such a refreshing drink to make for summer! Made with fresh squeezed grapefruit juice and gin!
Prep — 5 minutes
Total — 5 minutes
Serves — 2


  • 2 oz fresh squeezed grapefruit juice
  • 2 oz good quality gin
  • 1 oz simple syrup or less, to taste
  • 2 oz soda water


  • Shake grapefruit juice, gin, and simple syrup well over ice.
  • Pour into an ice filled glass, and top with club soda.
  • Garnish with fresh herbs and a slice of grapefruit if desired.


If you do not have fresh grapefruit juice, you can absolutely use canned juice. Fresh squeezed is the most delicious though!
If you want an herbal cocktail, try rosemary simple syrup!

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