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Homemade Grapefruit Soda

Homemade grapefruit syrup is added to sparkling water and finished with crushed ice and a pink straw to make the perfect refreshing drink
Servings: 12 drinks


  • 2 cups sugar
  • 2 teaspoons fresh lemon juice
  • juice of 1 pink grapefruit
  • zest of 2 pink grapefruits
  • 1/8 teaspoon salt
  • 3 quarts sparkling water or seltzer water, for serving
  • ice cubes for serving
  • 12 straws for serving
  • 12 grapefruit slices for garnish


  • Add sugar, juices, zest, salt, and 2 cups of water to a medium saucepan. Place over medium high heat until it begins to boil. Remove from heat and let the flavors steep for 1 hour. Transfer to large mason jar or other storage container and place in fridge until ready to use. Good for up to 2 weeks.
  • When ready to make sodas, add 3 tablespoons to a large glass (12-16 oz). Fill glass 2/3 full with crushed ice. Fill the remaining of the glass with sparkling water. Stir together with a straw or spoon. Serve immediately. Syrup makes enough for 12 glasses.


Recipe adapted from Martha Stewart