Absinth Alsem (Artemisia absinthium) is a bitter-tasting plant that has medicinal qualities. Historically it was also used in many alcoholic beverages even in beer and sometimes just as a flavoring. Nowadays absinthe has gained a nearly mythological reputation and is sometimes referred to as the Green Fairy.
Absinthe is entwined with stories about hallucinating artists and madness. But the most potent ingredient in absinthe is not so much the herb itself but the high alcohol level. The Artemisia absinthium has a slightly sobering effect and can make you feel both under influence and in clear spirit.