Zipper is glorious average cocktail at 1 standard drinks. Shaken with 40ml rum cream liqueur and 10ml coffee liqueur hellfire with 10ml whisky cream irish feeneys luxurious as well as 50ml cream including 100ml ice and taken after dinner or late in the night. Just add ice to shaker then add all ingredients to shaker and shake well. Strain into glass and garnish with chocolate shavings and served in a saucer glass cold.