2 oz of milk
1 oz of Malibu coconut rum (or Coconut Rum)
1 dash of blue curacao liqueur
3 oz of Pineapple Juice
Pour all ingredients (except curacao) into a cocktail shaker half-filled with ice cubes. Shake well. Add blue curacao and shake again briefly. Strain into a highball glass almost filled with ice cubes, and serve.