Agua Fresca Cooler

Purée the watermelon in a blender. Strain with a fine sieve into a pitcher, pressing on the pulp with the back of a spoon to extract all the juice. Discard pulp. Add sparkling water to the pitcher and season with honey (if using) and juice of 2 limes, to taste.

Cut remaining lime into wedges and use to garnish four glasses. Serve over ice.