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Watermelon Lemonade Punch

Watermelon lemonade punch made by blending fresh watermelon, straining for a smooth juice, then combining with tangy lemon and simple syrup for a bright pink-yellow swirl. Finished with lemon-lime soda for a lightly fizzy, ice-cold refreshment.
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Prep Time 20 minutes
Cook Time 3 minutes
chill 1 hour
Total Time 1 hour 23 minutes
Servings: 10 servings
Course: Drink
Cuisine: American
Calories: 190
Ingredients Equipment Method Notes

Ingredients
  

Watermelon Base
  • 6 cup fresh watermelon, cubed and seeded about 1/2 medium watermelon
  • 0.25 cup granulated sugar adjust to taste
  • 0.25 cup fresh lemon juice about 2–3 lemons
Lemonade
  • 1 cup fresh lemon juice about 6–8 lemons
  • 0.75 cup granulated sugar
  • 4 cup cold water
Punch Assembly
  • 2 cup lemon-lime soda or sparkling water
  • 1 cup ice cubes
  • 1 lemon thinly sliced for garnish
  • 0.5 cup fresh mint leaves for garnish
  • 0.5 cup small watermelon cubes for garnish

Equipment

  • 1 blender
  • 1 fine-mesh strainer
  • 1 large pitcher
  • 1 small saucepan

Method
 

Blend and strain watermelon
  1. Add the fresh watermelon cubes to a blender and blend on high until completely smooth, about 30–45 seconds. Blend should look like bright juice with no visible chunks.
  2. Pour the blended watermelon through a fine-mesh strainer into a large bowl or pitcher, pressing the pulp with a spoon to extract juice. Discard the pulp and stop when you’ve collected about 2½–3 cups of watermelon juice.
  3. Stir in the granulated sugar and the 1/4 cup fresh lemon juice into the watermelon juice until the sugar fully dissolves. Taste and adjust sweetness, then refrigerate until ready to use.
Make simple syrup lemonade base
  1. In a small saucepan over medium heat, combine 3/4 cup granulated sugar with 1 cup water and stir until the sugar dissolves, about 2–3 minutes. The syrup should look clear with no sugar grains.
  2. Remove the saucepan from the heat and cool the simple syrup completely. Let it cool until it’s not warm to the touch before combining.
  3. In a large pitcher, combine the remaining 3 cups cold water, 1 cup fresh lemon juice, and the cooled simple syrup. Stir well so the lemonade looks evenly bright.
  4. Pour the chilled watermelon juice into the lemonade pitcher and stir gently to combine. You should see a beautiful pink-yellow swirl.
Finish and serve
  1. Add the lemon-lime soda or sparkling water and stir lightly to preserve the bubbles. Stop mixing as soon as the fizz is evenly distributed.
  2. Fill glasses with ice cubes and pour the punch over. Serve immediately for the coldest, most refreshing sips.
  3. Garnish each glass with a thin lemon slice, a few small watermelon cubes, and a sprig of fresh mint. Arrange the garnish on top so it’s easy to grab.

Notes

Pro tip: Straining the watermelon is what keeps the punch smooth—press the pulp firmly, but don’t worry about squeezing every last drop. Refrigerate the strained watermelon base and the lemonade mix separately up to 2 days, and assemble the final punch up to 24 hours before serving (add soda/sparkling water right before serving). Freezing is not recommended because the texture changes once thawed. For a lower-sugar option, replace the granulated sugar with a 1:1 baking sweetener suitable for cold drinks.