Based on gentian and quinine (from the bark of the Cinchona tree), this is a fabulous sweet-bitter concoction with a strong and attractive orange flavour. It tastes terrific simply served on the rocks as an aperitif but its real raison dtre is its marriage with beer. It is traditional in France, Belgium, Luxembourg and Switzerland to pour a nip of Amer Bire into a glass of beer and enjoy the resulting taste sensation. You should try it, you might love it as much as I do! (Warning: its really addictive)