Gyromitra esculenta

Gyromitra esculenta, also known as the false morel or brain mushroom, is a fungus that belongs to the genus Gyromitra. While some species within this genus are edible, most are poisonous. Gyromitra esculenta contains a toxin that can be removed by cooking, but some individuals are highly sensitive to it. The exact chemical nature of this toxin is unknown, but it is a source of monomethylhydrazine, which can affect the central nervous system and cause hemolytic jaundice. Mushroom poisoning can be toxic and sometimes fatal, emphasizing the importance of positively identifying wild mushrooms as edible before consumption.123