Ingredient:
1/2 cup freshly squeezed lime juice
1/4 cup simple syrup
8 cups watermelon chunks with seeds removed
1/4 cup fresh mint leaves
2 cups vodka (can also use light rum or gin)
1 cup sparkling wine

Method:
Blend together watermelon and mint leaves until puréed.

Strain to remove solids and then stir in remaining ingredients.