1 1/2 oz. White Rum (more White Rum drinks) 1/4 oz. Maraschino Liqueur (more Maraschino Liqueur drinks) 1/2 oz. Grapefruit Juice (more Grapefruit Juice drinks) 3/4 oz. Lemon Juice fresh (more Lemon Juice drinks) 1/2 oz. Simple Syrup (more Simple Syrup drinks)