This mushroom is characterized by its slug or tongue shape, with a convex and wavy cap of dark brown or shiny black and a central foot with a ring. The surface of the cap is slimy and sticky to the touch, giving it its common name.
As for its flavor, the Babosa or Llanega negra mushroom has a sweet and mild flavor, with a pleasant aroma. It is a mushroom highly appreciated in gastronomy due to its meaty texture and its ability to absorb the flavors of the ingredients with which it is cooked.