2 oz of Pineapple Juice
1/2 oz of grenadine syrup
2 oz of lamb's navy rum (or spiced rum)
1 oz of Smirnoff vodka (or Vodka)
Pour the Lamb's Navy dark rum, Smirnoff vodka, pineapple juice and grenadine into a cocktail shaker half-filled with ice cubes. Shake well, and pour into a collins glass. Garnish with fruit slices and a maraschino cherry.