← BlogJune 28, 2026

How to Make the Perfect Watermelon Mint Cooler

American · Easy · 10 min · 2 servings

vegangluten-freedairy-free
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Watermelon Mint Cooler

A light and refreshing mocktail made with fresh watermelon juice and cool mint leaves. This drink is hydrating, naturally sweet, and ideal for hot summer days.

Why this recipe works

This Watermelon Mint Cooler 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 85 calories with 1g of protein, making it a balanced choice for any meal.

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What you will need

This recipe uses 8 simple ingredients that you can find at any grocery store:

  • 400 g fresh seedless watermelon chunks
  • 15 leaves fresh mint
  • 30 ml fresh lime juice
  • 120 ml sparkling water
  • 20 ml simple syrup
  • 1 cup ice cubes
  • 2 small sprigs mint for garnish
  • 2 small wedges watermelon for garnish

Step by step instructions

Step 1: Blend the Watermelon

Place the watermelon chunks into a blender and blend on high for 20 seconds until completely smooth and liquid. The natural juice from the watermelon makes this drink naturally sweet and vibrant pink.

Step 2: Strain the Juice

Pour the blended watermelon through a fine mesh strainer into a pitcher, pressing gently with a spoon to extract as much juice as possible. Discard the pulp left in the strainer.

Step 3: Muddle the Mint

Divide the fresh mint leaves between two glasses. Using a muddler or the back of a spoon, gently press and twist the mint leaves about 5 times to release their aromatic oils. Do not over-muddle or the mint will taste bitter.

Step 4: Build the Drink

Fill each glass with ice cubes. Add the fresh lime juice and simple syrup to each glass. Pour the strained watermelon juice evenly between the two glasses over the mint and ice.

Step 5: Top and Garnish

Top each glass with sparkling water and stir gently once to combine all the layers. Garnish with a fresh mint sprig and a small watermelon wedge on the rim. Serve immediately.

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Easy substitutions

Missing an ingredient? Here are some swaps that work perfectly:

  • fresh watermelon chunks → store-bought watermelon juice for a quicker preparation
  • simple syrup → skip entirely if the watermelon is very ripe and naturally sweet enough
  • sparkling water → ginger beer for an extra spicy and bubbly kick

Common mistakes to avoid

Watch out for these pitfalls that can affect your results:

  • Over-muddling the mint which causes a bitter chlorophyll taste that ruins the fresh flavor
  • Not straining the watermelon juice which leaves fibrous pulp and creates an unpleasant texture
  • Using unripe watermelon which is not sweet enough and results in a bland and disappointing drink

Nutrition facts

Per serving: 85 calories, 1g protein, 21g carbs, 0g fat, 1g fiber.

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