Trader Vic's Suffering Bastard
In a double Old-Fashioned glass combine the juice of 1 lime, reserving half the lime shell, 2 ounces dark rum, 1 ounce light rum, and a dash each of orange-flavored liqueur, orgeat syrup, and rock candy syrup and fill the glass with shaved ice. Put the lid of a cocktail shaker over the glass and shake the mixture vigorously. Remove the lid, garnish the glass with the lime shell and a sprig of mint, and serve the drink with a straw. Makes 1 drink.