Picture it: it’s 90° outside, the sun is blazing, and the humidity makes everything feel sticky. What you need is a cool, refreshing watermelon lemonade brightened with fresh garden rosemary.
This simple summer drink balances sweet and tart perfectly to cool you down. Below you’ll find an easy single-glass recipe, plus tips for scaling it up and a few variations to make it your own.
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Since it’s hot, I’ll keep this short so you can make your watermelon lemonade right away. The recipe below makes one glass—multiply ingredients by 4 or 6 for a pitcher.
🧾 Ingredients
- Fresh lemon juice
- Simple syrup
- Cold water
- Watermelon, blended
- Rosemary
- Ice cubes
See the recipe card below for exact measurements.
🍬 Make the simple syrup
Combine 1 cup water and 1 cup granulated sugar in a small pot. Heat gently, stirring, until the sugar fully dissolves. Cool, store in a sealed container in the fridge, and use within two to three weeks.
🍉 Blend the drink
Place about ¾ cup chopped watermelon in a blender and blend until smooth. If needed, press the fruit down so it reaches the blades. Remove any large bits.
Pick a fresh rosemary sprig, strip a few needles, and lightly crush them between your fingers to release the aroma—about ¼ teaspoon of chopped rosemary works well.
In a glass, combine ¼ cup fresh lemon juice, 1 tablespoon simple syrup, ½ cup cold water, ¾ cup blended watermelon, and the chopped rosemary. Stir, add ice, and garnish with a small lemon and watermelon slice. Enjoy!
🍾 Variations
- Bubbly — Swap the cold water for sparkling water for a fizzy version.
- Cocktail — Add 1 ounce vodka for a light summer cocktail.
Looking for more refreshing summertime drinks? Try other recipes in our collection for more inspiration.
- Thirst-Quenching Strawberry Cocktail & Mocktail
- Aperol Spritz – It’s Spritz O’Clock!
- Limoncello, Arancello Rosso, and Pompelmocello
- Switchel – Homemade Gatorade and Kombucha All-in-One
Did you make this Watermelon Lemonade with Rosemary? Let us know in the comments below!
📝 Recipe
Watermelon Lemonade with Rosemary
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Ingredients
- ¼ cup fresh lemon juice
- 1 tablespoon simple syrup
- ½ cup cold water
- ¾ cup watermelon, blended
- ¼ teaspoon rosemary, roughly chopped
- Ice cubes
Instructions
- To make simple syrup: combine 1 cup water and 1 cup granulated sugar in a pot and heat, stirring, until the sugar dissolves. Cool and refrigerate. Keeps 2–3 weeks.
- Place about 1 cup chopped watermelon in a blender and blend until smooth. Press the fruit down if needed so it reaches the blades.
- Strip a few rosemary needles and crush them lightly; about ¼ teaspoon chopped rosemary is ideal.
- In a glass, combine ¼ cup lemon juice, 1 tablespoon simple syrup, ½ cup cold water, ¾ cup blended watermelon, the chopped rosemary, and ice. Stir and garnish with small slices of watermelon and lemon.
Notes
- Variations:
- Bubbly: Use sparkling water instead of still for a fizzy version.
- Cocktail: Add 1 oz vodka for an easy summer cocktail.
- Suggestion: If you like this, try a refreshing strawberry cocktail or a virgin strawberry mojito.
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