It is a bitter liqueur created in 1868 by Salvatore Averna in the city of Caltanissetta, Sicily. It is based on the recipe for a herbal elixir Capuchin friars Badiade dela Santo Spirito in Caltanissetta To enjoy the taste Best served at a temperature of about 3 degrees as follows: we take a glass a little amaro, add an ice cube and some mint leaves.