Tracie says that the garnish, 3 brandied cherries on a stick, is very important - the tiny amount of brandy seals the deal.
Tracie Herrmann was challenged by a customer to marry Maker's Mark and Fernet Branca - and this is what she came up with. There is already a "Challenge Accepted" cocktail in the database - Tracy's desired name - so I am calling this one "Challenge Excepted." Interestingly enough, that one also contains Fernet. The system also provides a few other similar drinks - the Alcazer and the Root of All Evil in particular perhaps.
Recipe obtained directly from the bartender