Popsugar Living Fast And Easy Easy Watermelon Lemonade Recipe The Best Thing to Do With Leftover Watermelon June 30, 2015 by Anna Monette Roberts View On One Page Photo 1 of 10 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 1 Ingredients 1 small or 1/2 large seedless watermelon About 1 1/2 to 1 2/3 cups lemon juice (bottled or 6 to 8 lemons, juiced) 1/4 to 1 cup vanilla bean simple syrup or vanilla bean paste (really just depends on how sweet you like your lemonade) Ice Mint sprigs Previous Next Start Slideshow Fast And EasySummerParty PlanningRecipesWatermelonLemonadeSummer Food