A delicious recipe for Monkey Wrench, with light rum, grapefruit juice and bitters. Also lists similar drink recipes. Ingredients:1 1/2 oz light rum3 oz grapefruit juice1 dash bitters Method:Pour all of the ingredients into an old-fashioned glass almost filled with ice cubes. Stir well. Serve in:Old-Fashioned Glass Nutrition:(per 4.5 oz