B-52 #4 Recipe
1/3 Bailey's irish cream
1/3 Tia maria
1/4 Absinthe (or substitute)
First add the Bailey's irish cream, then the Tia Maria, and then carefully the Absinthe: Put the shot on fire and drink it with a straw, or you have another choice: When the shot is on fire you slap it to extinguish the fire and then you drink it.
This is the B-52 drunk in Portugal. Note that Absinthe is banned in a lot of countries. Anisette or Pernod can be used as substitutes.