Fire lichen was a type of lichen that grew in the Underdark near sources of geothermal heat. It was recognizable by its stalks of pale orange-white. When ground to powder and fermented, it formed a paste that was very spicy but edible, added to soups and stews or spread on sporebread for flavor.[1]

Duergar were known to ferment fire lichen into an extremely hot alcoholic beverage.[1]


  1. 1.0 1.1 Christopher Perkins, Adam Lee, Richard Whitters (September 1, 2015). Out of the Abyss. In Jeremy Crawford ed. (Wizards of the Coast), p. 22. ISBN 978-0-7869-6581-6.