Beirao - the liqueur of Portugal
A bottle of Licor Beirão
Licor Beirao is a Portuguese liqueur. Beirao is Portuguese for "from Beira", a former administrative region.
Its recipe is a secret. The producer, J. Carranca Redondo, Lda., only states it is made from a double distillation of seeds and herbs from all over the world, including Malaysia, Brazil and Thailand.
The liqueur was produced in the 19th century as a medicinal product for stomach aches by a pharmacy in Lousã. In the late 19th century alcoholic beverages were no longer qualified as medicinal but the liqueur was kept in production in a small factory owned by the son-in-law of the original producer.
Info from Wikipedia