Oldtown mold

Oldtown Mold, also known as Tyromyces Casein in academic circles, is a relatively obnoxious but edible fungus. Known to grow on near any non-living surface, as long as sufficient humidity is present. The mold is difficult to contain, due to how easily it spreads because of its spores’s spreading process. Once the spores are ready to disperse, a chemical reaction leads to a spontaneous reaction, setting the mold aflame and scattering the now reinforced spores through the air. This process, easily noticed by the smell of burning cheese, can take anywhere from several hours to just a few minutes.

No one knows the first desperate soul to attempt avoiding starvation by consuming the pale yellow substance, but the taste is an acquired one. The taste is a mixture of bad cheese and damp soil, with textures and visuals that only make what could have been tolerable, disgusting.

Supposedly, a moonshine can be distilled using this mold, though experts strongly advise against it.

"It felt as if I attached a hagfish to my mouth and asked it for a kiss. But not simply any hagfish. One who has previously thrown up in its own mouth and then used it to make a rancid cheese. The hagfish then  ate this cheese, and then kissed me." — description by Explorer Arissa.