Though perfect for a dessert cocktail or as a sweet beverage, don't let this drink fool you — it's packed full of alcohol. 9 Restaurant mixologist Gennarose revealed that root beer is used to mellow out the strong taste of the coffee liqueur.
In a cocktail shaker or glass, muddle the vanilla ice cream until creamy (you don't want it to be chunky). Add the Stoli and liqueur and stir. Pour into a martini glass and top with the root beer. (It will take a few minutes for the root beer to float down and for a nice froth to create on top.)