This is how the Slippery Nipple cocktail is prepared:
If necessary, add the optional grenadine to a shot glass.
Layer the sambuca on top by slowly pouring it over the back of a spoon (or into a shot glass if not using grenadine).
Use the same spoon to layer the Irish cream on top.
Did you already know?
The patriarch of the sweet shot family, which inevitably announces that a party is about to begin, is this blend of Irish cream liqueur and aniseed-flavored sambuca. This mixture is easier to layer than many others and makes for impressive visual effects, even if the sweet taste leaves a little to be desired.