1 1/2 ounces rum 1/2 ounce lime juice 1/2 ounce sweet vermouth Splash white crème de cacao Splash grenadine
Shake with cracked ice. Strain into a chilled cocktail glass. Garnish with a lime twist.
NOTE: The key with this drink, is to get just enough crème de cacao so that you can taste it, but not so much that it is obvious.