It's basically a perfect Manhattan that's heavy on the vermouth with a hint of orange. My problem is that I hate dry vermouth. I love a perfect Manhattan but this is heavy on the vermouth and the Cointreau can't offset that. I will stick with a traditional Perfect Manhattan.
Pretty solid Manhattan variation. The hint of orange is just enough to keep things different and interesting, without distracting from the main event, the bourbon.
Oh heavens! I completely misread the Grand Mariner proportions as 1.5 oz. Will try again at home, and with Carpano Antica vs. the Martini & Rossi that was What There Is .