How to Make the Perfect Sparkling Watermelon Agua Fresca
Mexican · Easy · 10 min · 6 servings

A bright and juicy watermelon agua fresca lifted with fresh lime juice and topped with sparkling water for a festive fizz. This effortless summer drink comes together in minutes and needs no cooking.
Why this recipe works
This Sparkling Watermelon Agua Fresca recipe has been crafted to deliver restaurant-quality results in your home kitchen. At just 10 minutes from start to finish, it fits perfectly into a busy schedule without sacrificing flavor. Each serving comes in at 65 calories with 1g of protein, making it a balanced choice for any meal.
What you will need
This recipe uses 8 simple ingredients that you can find at any grocery store:
- 8 cups seedless watermelon cubed
- 3 tablespoons fresh lime juice
- 1 teaspoon lime zest
- 2 tablespoons granulated sugar
- 0.25 teaspoon fine sea salt
- 2 cups sparkling water
- 0.25 cup fresh mint leaves
- 3 cups ice cubes
Step by step instructions
Step 1: Blend the Watermelon
Add the cubed watermelon to a blender in batches and blend until completely smooth. Do not add any water as fresh watermelon contains enough liquid on its own.
Step 2: Strain for Smoothness
Pour the blended watermelon through a fine mesh strainer into a large pitcher, pressing with a spoon to extract all juice. Discard the fibrous pulp left behind.
Step 3: Season and Sweeten
Stir in the fresh lime juice, lime zest, granulated sugar, and sea salt. Stir until the sugar is fully dissolved. Taste the mixture and adjust sweetness or tartness according to your preference.
Step 4: Chill the Base
Refrigerate the watermelon base for at least 20 minutes until very cold. Do not add the sparkling water yet as it will lose carbonation if added too early.
Step 5: Top and Serve
Fill glasses with ice and pour the chilled watermelon base about three-quarters full. Top each glass with sparkling water and gently stir once. Garnish with fresh mint leaves and a lime wedge.
Easy substitutions
Missing an ingredient? Here are some swaps that work perfectly:
- sparkling water → plain cold water if you prefer a still version
- granulated sugar → honey or agave syrup for natural sweetness
- fresh mint → fresh basil for a more unexpected herbal note
Common mistakes to avoid
Watch out for these pitfalls that can affect your results:
- Adding sparkling water too early and losing all the carbonation before serving
- Not straining the blended watermelon which leaves a pulpy unpleasant texture
- Using warm or room temperature watermelon which makes the drink taste flat and less refreshing
Nutrition facts
Per serving: 65 calories, 1g protein, 16g carbs, 0g fat, 1g fiber.
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