WATERMELON AGUA FRESCA 1 very ripe, red seedless watermelon, about 12 pounds Juice of 4 limes 3/4 cup sugar 1 cup crushed fresh mint leaves, plus sprigs for garnish 4 cups sparkling water 3 limes, thinly sliced 2 quarts ice cubes Cut the watermelon in half and, using a metal spoon, scoop the flesh into [...]