2 cl of Absolut vodka (or Vodka)
2 cl of cointreau orange liqueur (or orange liqueur)
2 cl of Midori melon liqueur (or watermelon liqueur)
Lemon Juice
Fill the boston shaker with all the ingredients and a lot of ice cubes, then shake untill your hand goes cold. Pour up in a highball glass and put a lemon slice on the edge.