A touch too candy sweet, but overall tasty. No Scotch on hand; used Clonakilty instead. PF Dry Curacao... a few sips in, and this is tasting like an Old Fashioned inspired strong ale from Founders Brewing (obscure reference)... this might benefit from a spritz of soda/seltzer/ginger beer.
I changed the recipe a bit by using the mild Nonino amaro instead of vermouth, omitting the vanilla bitters and instead adding a dash of vanilla extract. The result was very pleasing, maybe a touch too sweet for my palate.
The perfect musical accompaniment to this is J J Cale's song of the same name. Late on a balmy evening sit back, next to your sweetheart, and enjoy the drink, the music and the warmth of her hand in yours. We had no Vanilla Bitters and so substituted Black Walnut...but just three drops.