One of my favorite things with cocktails is how they can tease out different flavor notes from the components. The amaro caldo concept is probably the purest example - it is like using chromatography to separate colors from ink - sipping this you get to taste individual components of Braulio (or other amaro) in detail. Excellent! Something any cocktail fan should try, whether with amaro or maybe some other favorite liqueur (or liquor).
One of my favorite drinks. I feel like this presentation in a way reveals more about the character of different brands of amari. I seem to prefer darker, more aggressive herbal-bitter varieties here. My favorites to use are Cynar, Averna, Jagermeister. CioCiaro and Nonino are okay. Fernet Branca was a no-go. You may feel differently, depending on your inclinations.