Talk about a mouthful of flavor! I found this nicely balanced with Cocchi Storico Vermouth di Torino and Fernet Branca. Although syrupy it didn't taste too sweet. I've got to try this with Cocchi Dopo Teatro Vermouth Amaro.
Wow, choose your vermouth wisely. I think since we’re absent a spirit the vermouth profile is much more important. Strega’s minty aftertaste compliments the eucalyptus of fernet well.
Tried this, still too sweet, tried adding orange bitters, slight improvement but now so far off the original recipe I have to conclude it just doesn't work.
A fine after-dinner drink, but I found the Strega a little lost (probably behind a strong vermouth); upping it a bit (5-10ml) made a better-rounded drink to my taste.