Cocktails Recipes Monkey Wrench Recipe Ingredients 1 1/2 oz light rum3 oz grapefruit juice1 dash bitters Pour all of the ingredients into an old-fashioned glass almost filled with ice cubes. Stir well. Spread the love Related posts: Oaxaca Jim Recipe Nevada Cocktail Recipe Hilgert Cocktail Recipe Bitter Evan Recipe Vicious Sid Recipe Juan Blue Recipe