Deadly is delectable heavy cocktail at 1.8 standard drinks. Shaken with 30ml bourbon breckenridge and 15ml vermouth sweet with 15ml maraschino liqueur as well as 10ml bitters including 100ml ice and good with afternoon tea. Just add half the ice to shaker then add ingredients into shaker over ice and vigorously shake. Pour everything into glass and add more ice to glass and garnish with a few maraschino cherries and served in a old fashioned glass cold.