Appetizer à l'Italienne

This is a long overdue entry. I was introduced to this drink by the esteemed John Gertsen at Drink, who took from The Flowing Bowl. Not for beginners, but not to be missed.

2 oz Sweet Vermouth
1 oz Fernet Branca
1 dash Absinthe (or substitute)
2 dashes Simple Syrup

Combine ingredients in ice-filled glass and stir for 20-30 seconds. Strain into a down glass.