I would never think that mixing these ingredients would work, but this is an excellent drink. The best use I've found so far for Banane du Bresil and a favorite cocktail.
This was nice. I found it a bit sweet and was missing the bourbon taste. Did find the banana a bit overpowering, and would reduce that a bit. I like it, but it is missing something. Wonder what using dry vermouth would do outside of the color. Maybe some bitters. Need to think on this one.
We'e got something really interesting here. Boulevardier is not my cup of tea. But I must admit that replacing half of Campari by Half of Banana is brillant.
I find the .5 oz of a banana to be too sweet. The recipe I use is closer to the modern boulevardier spec. 1.5 Rye, .75 Sweet Vermouth, .75 Campari and .25 oz of Banana.
I, too, found it imbalanced. If I tried this again, I would probably dial down the sweet vermouth, and likely replace it with more banana - it's something of a showcase for 'banana' anyway.