In a small saucepan, bring sugar, water, and orange
zest to a boil over high. Reduce to a simmer and cook until sugar dissolves, 3 minutes. Let syrup cool
in a bowl. In a blender, puree watermelon cubes until
smooth. Strain through a fine-mesh sieve, pressing on solids, into a pitcher (you should have about 1 cup juice). Stir in syrup, lime juice, and tequila. Fill salt-rimmed glasses with ice, then pour margarita mixture over top. Garnish with lime wedges.
I loved this drink, but altered the recipe somewhat by combining this with the recipe for watermelon coolers (a non-alcoholic recipe on this site). The only real difference in the watermellon juice is the lack of orange, but I didn't miss it at all!
The flavor is fruity with enough tequila to give it a kick, and it's a wonderfully cooling way to enjoy a summer cocktail. I really appreciate the simpleness of only a few ingrediants--it means no flavor gets lost behind any others.
YUM! This is the perfect summer time cocktail. Surprisingly easy although it takes a little time to make the watermelon juice. But sooo worth it!