Jitterbug
Shake, strain, Collins glass, rocks, garnish
Canon Cocktail Book, p. 134; Also https://thefarmersspoon.com/2017/01/31/intro-to-fernet-hanky-panky-the-…
- I didn't care for this. It's drinkable but I would not make this again. If I were looking for an after-dinner espresso based cocktail I would go for something like an espresso martini.