This is the perfect summer evening cocktail; nice and cool, but not too sweet. For those of you who cannot stand dry vermouth, trust me. Neither did I until my husband made a mistake. Please be sitting down when you drink this, eh? Preferably facing west!
Place ice cubes into a highball glass or hurricane glass. Gently pour in the dark rum, light rum, coconut rum, grenadine, orange juice, pineapple juice, lemon juice, and vermouth one after another in order to create a layered effect in the glass. Garnish with a maraschino cherry, lemon slice, and orange slice.