Intensely bitter since its inception in 1845, Fernet-Branca has been produced according to the original recipe that has been handed down from generation to generation. The bitters are made from 27 herbs and other ingredients. The exact formula is a trade secret known only to the Fernet-Branca president, Niccolò Branca, who personally measures out the aromatics during the production process.
The same manufacturer also offers a sweeter, mint-flavored liqueur under the label Branca Menta.
As a fernet, the beverage has a higher ABV (39%) and lower sugar content than most other amaros.