Amaro Felsina is an alcoholic bitters with a slight orange taste that can be served as an aperitif or a digestif.
It can be served straight up or on the ice, and with or without a twist of orange or lemon peel.
It is sold in 700 or 750 ml bottles, and has an alcohol content from 28% to 30 %, depending on the maker.
The Schiavo brand, for instance, is 28%. Another well-known brand is Ciemme.