How to make fresh grapefruit soda that’s perfect as a mocktail or for making cocktails like Palomas! It’s the tastiest healthy, refreshing drink, and so easy to make with just a few ingredients. 

A beautiful photograph of two glasses filled with fresh grapefruit soda and ice, garnished with pink grapefruit wedges and rosemary. This grapefruit soda is perfect for cocktails like tequila paloma.

Our backyard grapefruits are ready to be used up, and just like our blood oranges and lemons, one of my favorite things to do with them is to juice them and use for fun mocktails and cocktails. You might remember our fresh Margarita Mix, Classic Aperol Spritz, and Strawberry Lemonade recipes. 

While there are some great brands that make grapefruit soda, like Fever-Tree, that are great for making cocktails, it’s easy to make grapefruit soda at home. However, it’s so much tastier freshly made, and you can control the quality of ingredients and how you’d like to sweeten. My go-to version is completely sugar-free. 

Photograph of a grapefruit tree with pink grapefruits and flowers.

A grapefruit tree in our backyard.

There are around 13 different grapefruit varieties and any will work for this recipe, though the color and flavor will vary. I like to use pink. 

Grapefruit is available in stores year-round, as those from California and Arizona are available from around January through Summer, and those from Florida and Texas are available in the Fall through the next June. 

How to Make Grapefruit Soda

Homegrown grapefruits and bottles of San Pellegrino water on a marble countertop.

All you’ll need to make a delicious fresh grapefruit soda is sparkling water, a few grapefruits, and a sweetener of your choice. Agave syrup works well, but I usually use organic liquid stevia (Trader Joe’s is my favorite) for a sugar-free drink. If you’re into healthy low-sugar drinks, you’ll love our Lemon Apple Cider Vinegar Drink too. 

Fresh grapefruit juice is poured into a mason jar filled with sparkling water to make sugar free grapefruit soda.

You can juice the grapefruit in advance, but don’t mix it with sparkling water until just before serving, as you’ll want to keep it nice and bubbly. 

Two paloma cocktails made with grapefruit soda and tequila in a white kitchen.

Grapefruit Soda Cocktail

I love this fresh grapefruit soda as-is, but you can also use it as a base for other cocktails and mocktails. Try one of these or come up with your own. 

  • Try a classic gin Greyhound
  • Add 1-2 oz. tequila and a squeeze of lime for a Paloma. 
  • Sweeten with rosemary or lavender simple syrup
  • Garnish with a fresh slice of grapefruit and herbs like thyme or rosemary, or a dried citrus slice
Yield: 3 1/2 cups (about 3 drinks)

Grapefruit Soda

Prep Time 5 minutes
Total Time 5 minutes

A simple and refreshing homemade grapefruit soda that's delicious on its own or for cocktails. Add tequila to this grapefruit soda for a Paloma, or create your own cocktails or mocktails.

Grapefruit Soda


  • 1 1/2 cups fresh pink grapefruit juice (about 3 large grapefruits)
  • 2 cups sparkling water
  • Organic liquid stevia, to taste (or agave)


  1. When you're ready to make your grapefruit soda, combine the grapefruit juice and sparkling water in a pitcher.
  2. Sweeten to taste by whisking in agave syrup or liquid stevia. The amount you'll need will really vary depending on your sweetness preference and your grapefruits. I used about 6 drops of stevia.
  3. Serve over ice and garnish with a slice of grapefruit and sprig of thyme or rosemary, if desired.


You can juice your grapefruits in advance, but don't mix with the sparkling water until you're ready to serve or it may go flat.

Grapefruit Cocktail and Mocktail Ideas

  • Paloma: Mix 2 oz. grapefruit soda, 1 1/2 oz. silver tequila, and a squeeze of lime.
  • Greyhound: Mix 2 oz. grapefruit soda with 1 1/2 oz. gin.
  • Lavender Grapefruit Soda Mocktail. Sweeten with lavender simple syrup instead of stevia/agave.

Nutrition Information:
Yield: 4 Serving Size: 1 glass
Amount Per Serving: Calories: 36Total Fat: 0gSaturated Fat: 0gTrans Fat: 0gUnsaturated Fat: 0gCholesterol: 0mgSodium: 2mgCarbohydrates: 9gFiber: 0gSugar: 0gProtein: 0g

Nutrition information is automatically calculated by Nutritionix. I am not a nutritionist and cannot guarantee accuracy. If your health depends on nutrition information, please calculate again with your favorite calculator.