The first amaro that I haven't liked. Literally tastes like band-aids. Even a tiny amount overpowers any cocktail it's in. Awful.

I'm confused... it's called the "Ruby Manhattan", but then uses tawny rather than ruby port.

There's just too much of it in this recipe. See my comment above.

It's pretty good as is, but for me it's a bit too overpowered with Chartreuse and Maraschino.
I like this better:
1.5 oz Irish whiskey
0.5 oz Green Chartreuse
0.5 oz Maraschino Liquor
0.5 oz Lime juice.