Instructions
Stir, straight up, no garnish
Notes
For the better drink, use softer London dry gin or switch to Plymouth gin.
Aside from Fernet Branca and Pernod Absinthe, my choice were Bulldog / Cuor di Limoncello / Christian Drouin Calvados VSOP.
History
Inspired by Omnia's song of the same name and Shakespeare's Macbeth (Act 4, Scene 1)