4 cups watermelon, cubed
1/4 cup sugar
15 basil leaves
1/2 cup water, room temperature
1 lime, juiced
Place the watermelon, sugar, and 2 to 3 ice cubes in a blender. Purée until smooth. Strain the watermelon through fine-mesh strainer or cheese cloth and discard the pulp.
In a glass pitcher, combine the water, lime juice, and basil leaves. Muddle the basil against the sides of the pitcher with a spoon. Pour the watermelon into the pitcher, stir, and serve over ice. Garnish with lime and basil. (The basil garnish is the cherry on top—every sip buries your nose in the fragrant leaves.)
This keeps well in the refrigerator for a few days.