DIRECTIONS
Bring the sugar and water to a boil in a small saucepan and cook until the sugar has completely dissolved.
Let cool.
In a food processor, puree the watermelon flesh.
Add a little of the sugar syrup to sweeten, to taste.
Pour the pureed watermelon into 2 empty ice trays and freeze for at least 4 hours.
In a blender, combine the frozen watermelon cubes, more simple syrup to taste, lemon juice and vodka, melon liqueur and blend until smooth.
Pour into 8 frozen martini glasses and garnish with a lemon twist.
Serves 8.