Dark Metal is mouth watering above average cocktail at 1 standard drinks. Built with 30ml blackberry liqueur kilchoman and 15ml rum spiced black captain morgan with 45ml cola soda as well as 100ml ice and best at tea time. Just fill glass with ice then add shot of black berry liquor and pour in half a nip of black spiced rum. Top with cola soda and served in a old fashioned glass cold.