Ingredients
1/4 cup sugar
1/4 cup lightly packed mint sprigs, plus more for serving
6 cups peeled, chopped watermelon
1/3 cup fresh lime juice
1 ounce tequila (optional)
Preparation
In a small heatproof bowl, pour 1/2 cup boiling water over sugar and mint; stir until sugar has dissolved. Let cool completely, about 20 minutes. Strain syrup into a blender; discard mint.
Add watermelon, lime juice, and 1 3/4 cups cold water; blend until smooth. Strain through a fine-mesh sieve.
Serve over ice, garnished with a mint sprig, or refrigerate in an airtight container up to 3 days. If using tequila, stir a shot (1-ounce) into each glass before serving.
