I tried this with all equal parts and I'm not sure why the House of Angostura chose to go a different way. It absolutely works in its own right as a Negroni riff. In my mind it's even surpassed it. The Negroni is freshly bitter whereas the Amaroni (with my specs) is darkly bitter. Both works splendidly but the Amaroni is my champion for the fall and winter.

I love Amaro di Angostura, and this cocktail adds another way to enjoy it.