Amer Picon is made with fresh and dried orange peel macerated in neutral alcohol and then distilled. Dried gentian roots and quinquina are macerated separately...
Many thanks for the suggestion Stephan. I have not tried Palo Tunel (30% alc./vol.) but I have added a "See more Amer" link above to display potential alternatives to Picon Amer (21% alc./vol.)