Loved this. We use a blended American Whiskey as I find Bourbon a bit too sweet. The resulting cocktail had a wonderful hint of orange with just the right amount of sweetness. Perfect for before dinner. Spirit forward and very easy to drink.
Tried this as written, but I prefer a sweeter Manhattan. I upped the vermouth by around 10ml and much preferred it that way. I used Frank Cooper’s Oxford Marmalade. It took a long time to dissolve in the bourbon but gave a good flavour.