Watermelon Screwdriver

Directions

1. 1
   In a food processor or blender, puree the watermelon with the lemon juice in batches, transfer the mixture to ice cube trays with the dividers in, and freeze it.
2. 2
   Transfer the cubes to a portable ice bucket.
3. 3
   Divide the watermelon cubes among 4 glasses and into each glass pour 1 jigger of the vodka and 1 cup of the orange juice.
4. 4
   Stir the drinks and garnish each one with a mint sprig.