2 parts Watermelon puree (just blend some seedless watermelon cubes in a blender)*
2 parts Absolute Citron vodka (you could use regular vodka if you like)
1 part Triple Sec
6 large Mint leaves
Muddle mint and lime with a little bit of ice in a cocktail shaker. Add puree, vodka, triple sec and more ice and shake well. Strain and serve in chilled martini glass. Garnish with lime, mint sprig and/or a piece of watermelon.