1 ½ oz. Grey Goose vodka
1 oz. St. Germain elderflower liqueur
¾ oz. Fresh lemon juice 
½ oz. Fresh blackberry puree

Shake all ingredients in a cocktail shaker and strain into a coup or Martini glass. Garnish with mint sprig.

The mixologists at The Surf Lodge in Montauk, NY, created this recipe.