Rim the serving glass with sugar. Combine liquors with espresso in a mixing glass; add ice, shake, and strain. Garnish with powdered chocolate. First add all the ingredients to the shaker. Then fill the shaker with ice to the top and shake hard for about 7/10 seconds. 15/20ml Orange liqueur, depending how sweet you like it Add all the ingredients to the shaker, then prepare the glass you are serving it in (salt &/or ice).