½ouncebrandy-based orange liqueurlike Grand Marnier
Instructions
Pour coffee liqueur into a shot glass.
Place a teaspoon or a bar spoon upside down at an angle just above the surface of the coffee liqueur. Very slowly pour the Irish cream liqueur over the back of the spoon (to create a layer that doesn’t mix with the coffee liqueur).
Clean the spoon.
Place the spoon just above the surface of the Irish cream liqueur. Very slowly pour the orange liqueur over the back of the spoon (to create a layer that doesn’t mix with the Irish cream).
For a 2 ounce shot, use ⅔ ounce (20 ml) of each
Notes
If you are really feeling adventurous, flambé the orange liqueur for up to one minute. Be very careful. Use a long reach lighter and ensure the glass is filled to the brim so the flame doesn't overheat the glass walls and cause a crack.
B52s are meant to be drunk all at once like a typical shot.
The coffee liqueur goes on the bottom since it is the heaviest, then Irish cream liqueur, then orange liqueur on top. The difference in weight helps create distinct layers.