In a shot glass begin by pouring a layer of coffee liqueur.
Next, using a kitchen spoon or a bar spoon slowly pour a layer of Irish Cream liqueur.
Last, gently pour a layer of whiskey.
Notes
Layered shots take practice to achieve clean, undisturbed layers. The results are beautiful and worth the effort. It helps to pour from a shot glass or measuring glass rather than a bottle. Using the back of a spoon can help to slow the pour even more. Of course if you don't care about aesthetics you can throw caution to the wind and pour straight from the bottle.
You may double the recipe and serve it in a short cocktail glass as a Duck Fart drink. Personally, I find this recipe best served as a shot.
B52 vs Duck Fart- you may be curious what the difference it between a B52 shot and a Duck Fart shot. A B52 uses Grand Marnier (orange flavored liqueur) where a Duck Fart uses Whiskey.