To keep it simple, you can start with store-bought limeade, says chef Karen Hatfield of Odys + Penelope and Sycamore Kitchen restaurants in Los Angeles.
This recipe, and others like it, can be found in the article “11 Recipes That Star Watermelon, the Unofficial Fruit of Summer.“

Photo: Erin Kunkel; Styling: Emma Star Jensen
In a large pitcher (at least 2 1/2 qt.) stir mint, lime, and 2 cups cold water with a wooden spoon to release flavors. Stir in limeade, watermelon, and 2 cups ice cubes.
0 servings
* The % Daily Value (DV) tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.