Grapefruit Tonic Cocktail

Grapefruit is perfect for a bright warm-weather drink. Tart, sweet, and refreshing, grapefruit is one of our favorite cocktail mixers. It can add an extra pop to a summer sipper or balance out a richer drink. This grapefruit tonic cocktail is perfect out by the pool, or just sipping on the porch while the kiddos play. Simple and easy to make, you’ll be preparing this cocktail year-round.

Finished product of cocktail with cheese and crackers

My husband’s drinking tastes vary from time to time. I rarely have a drink ready for him without asking because his preference can range from red wine to beer and on occasion, to a mixed cocktail. One night, a neighbor handed Matt a cocktail with grapefruit and he couldn’t believe how much he enjoyed it. Thats when we started experimenting with this grapefruit tonic cocktail. It’s simple. Its fresh. It’s perfect for our hot summer days. (I will say that this gin makes a huge difference also.)

How do you cut a grapefruit for our tonic cocktail?

Start by sectioning a grapefruit by cutting off both ends of a grapefruit. Turn the grapefruit so one of the cut ends faces you. Make several 1/4 inch slices into the outer edge of the grapefruit. Use the knife to peel the grapefruit. Cut off each section with the knife. Now it is ready to use!

Can you cut a grapefruit like an orange?

You can peel it and divide it into segments, like an orange. But a grapefruit has much tougher membranes than an orange, and I find them unpleasant to munch. However, with this recipe, keeping the peel on makes it much easier to squeeze, or juice. Another way to eat the grapefruit is to cut it in half, and scoop out the segments with a serrated grapefruit spoon.

Ingredients for Grapefruit Tonic Cocktail

Can you freeze fresh grapefruit?

Absolutely! You can store grapefruit in the freezer. Peel them and freeze them whole, or cut them apart and freeze the sections. Frozen grapefruit can be eaten right out of the freezer, tossed in water for a fruit ice cube, used in smoothies, or thawed and eaten later.

How to make this simple grapefruit tonic cocktail

Slice your grapefruit into wedges.

Fill Glass with ice.

Pour gin into glass.

Squeeze 1-2 slices of grapefruit into gin and ice.

Top off with tonic.

Garnish with grapefruit wedge and mint.

Finished product of cocktail with cheese and crackers

Regardless if you are poolside, beachside, or street-side with friends or just watching the kids play, this cocktail will refresh and rejuvenate whatever you have going on. Simple, easy… delicious. Don’t forget that grapefruit next time you hit the market 🙂

Yield: 4 servings

Grapefruit Tonic Cocktail

Grapefruit Tonic Cocktail
Prep Time 5 minutes
Total Time 5 minutes


  • 12oz tonic water
  • 6 oz gin
  • 2 fresh grapefruit
  • mint


  1. Slice your grapefruit into 6 wedges.
  2. Fill glass with ice and squeeze one wedge of grapefruit into the glass.
  3. Measure out 1.5 oz (a shot) of gin.
  4. Pour tonic to fill the glass.
  5. Garnish with mint leaf and additional grapefruit wedge.
  6. Sip and Enjoy!

Nutrition Information:



Serving Size:


Amount Per Serving: Calories: 181Total Fat: 0gSaturated Fat: 0gTrans Fat: 0gUnsaturated Fat: 0gCholesterol: 0mgSodium: 12mgCarbohydrates: 22gFiber: 2gSugar: 17gProtein: 1g

(Nutritional information provided is an estimate and will vary based on cooking methods and brands of ingredients used.)

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