Allegheny is yum yum quite strong cocktail at 1.5 standard drinks. Shaken with 30ml bourbon nelson county and 30ml vermouth dry boissiere with 15ml blackberry liqueur as well as 15ml lemon juice including 100ml ice and good with afternoon tea. Just add ice to shaker then add all ingredients to shaker and vigorously shake. Strain into glass and served in a saucer glass cold.