"Count Loretto" should be considered as a WORK IN PROGRESS. I made this cocktail in a half-portion, and I'm glad I did, because making a full portion would have been a waste of good whiskey, rum, and Fernet Branca.
As is, the Fernet Branca overwhems the rum, and nearly overwhelms the whiskey. After the initial taste, I eye-balled my additions, adding 1/8 oz each of whiskey and rum, and 2 drops of Fee Bros. gin barrel-aged orange bitters.
Without these changes, I rate the libation at 2.0; with the changes I rate it at 2.5.