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Photograph of a homemade grapefruit soda with a grapefruit slice, sprig of rosemary and white straw

Naturally Sweetened Grapefruit & Rosemary Soda

  • Author: Lauren
  • Prep Time: 10 minutes
  • Cook Time: 5 minutes
  • Total Time: 15 minutes + 1 hour steeping
  • Yield: 1½ cups 1x
  • Category: Drink/Cocktail


This grapefruit soda, made with a naturally sweetened simple syrup, is a great anytime drink. Add a splash of booze and you’ve got a quick, low-sugar cocktail!


  • Minced zest from 2 ruby red grapefruit
  • 1 cup fresh ruby red grapefruit juice
  • ½ cup honey
  • 1 tablespoon fresh lemon juice
  • 2 sprigs fresh rosemary


Bring zest, grapefruit juice, honey, lemon juice and rosemary sprigs to a boil over medium-high heat in a small saucepan. Remove from heat and let mixture steep for 1 hour before straining through a fine mesh sieve.

Store grapefruit-honey syrup in an airtight glass container in the refrigerator until ready to use.

To make a soda, combine 2 tablespoons (1 ounce) grapefruit-honey syrup with 1 cup (8 ounces) chilled club soda. Add more or less syrup to taste.


Equipment you’ll need:

  • Saucepan
  • Fine-mesh sieve

Soda syrup should last up to 2 weeks in an airtight glass container stored in the refrigerator.

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