Optional: Rim the glass with a mixture of equal parts sugar, salt and pepper
Muddle limes, mint and syrup in a bar mixing shaker. Add ice and then watermelon puree and light rum. Shake vigorously. Pour into a highball or Collins glass, top with club soda or ginger ale. Garnish with a wedge of watermelon and fresh mint.
A viewer or guest of the show, who may not be a professional cook, provided this recipe. It has not been tested for home use.