1 3/4 oz of grapefruit juice
1 3/4 oz of jamaican dark rum (or Dark rum)
3/4 oz of Orange Juice
3/4 oz of grand marnier orange liqueur (or orange liqueur)
1 of lime
Shake ingredients in a cocktail shaker with ice. Strain into a highball glass filled with ice cubes and garnish with a lime wedge.