Prepare the Mint Syrup: In a small saucepan, combine water, sugar, and mint leaves. Heat gently until the sugar dissolves. Remove from heat, let cool, and strain out the mint leaves.
Blend the Watermelon: Puree the chopped watermelon until smooth and juicy.
Combine Ingredients: In a large pitcher, mix the watermelon juice, lemon juice, and prepared mint syrup.
Serve: Pour over ice and stir before drinking. Garnish with fresh mint leaves or lemon wedges if desired.
Serving and Storage Tips
