Take the ice cream out of the freezer and let it sit for 5-10 minutes to soften

Add the bourbon, Ramazzotti, simple syrup and bitters in a mixing glass, add ice and stir for 10 seconds

Strain the chilled mixture into a serving glass and add an ounce of Guinness Draught

Carefully float a few spoons of slightly melted vanilla ice cream

Using a grater, shave dark chocolate on top