← BlogJune 28, 2026

How to Make the Perfect Watermelon Rosemary Water

American · Easy · 10 min · 6 servings

vegangluten-freedairy-freelow-caloriesugar-free
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Watermelon rosemary water is a surprisingly sophisticated infused water recipe that pairs sweet and hydrating watermelon with earthy piney rosemary for a refreshing and complex flavor combination. This summer detox water is celebrated for electrolyte replenishment, heat relief, and creating an impressive beverage for outdoor gatherings and backyard parties.

Why this recipe works

This Watermelon Rosemary Water 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 18 calories with 0g of protein, making it a balanced choice for any meal.

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What you will need

This recipe uses 4 simple ingredients that you can find at any grocery store:

  • 2 cups fresh watermelon cubed and seeded
  • 3 sprigs fresh rosemary
  • 10 cups cold filtered water
  • 1 cup ice cubes

Step by step instructions

Step 1: Cube the Watermelon

Cut fresh seedless watermelon into one-inch cubes removing any remaining seeds. You can lightly muddle a few of the cubes to accelerate juice release while leaving the rest intact for visual appeal.

Step 2: Prepare the Rosemary

Lightly bruise the fresh rosemary sprigs by pressing them against a cutting board with the flat side of a knife. This releases the essential oils without stripping the leaves.

Step 3: Combine and Infuse

Add the watermelon cubes and bruised rosemary sprigs to a large pitcher. Pour in the cold filtered water and ice, then refrigerate for 2 to 4 hours before serving.

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Easy substitutions

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

  • fresh rosemary → fresh thyme for a lighter and more delicate herbal complement to watermelon
  • fresh watermelon → watermelon juice pressed fresh to create a more intensely flavored and colorful drink

Common mistakes to avoid

Watch out for these pitfalls that can affect your results:

  • Infusing for too long with rosemary which releases tannins and makes the water bitter and medicinal
  • Using seeded watermelon and not removing the seeds which can impart a slightly bitter flavor into the infused water

Nutrition facts

Per serving: 18 calories, 0g protein, 5g carbs, 0g fat, 0g fiber.

Ready to cook?

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