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]


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