Gyromitra esculenta
Gyromitra esculenta is a popular delicacy in Scandinavia, Eastern Europe, and the upper Great Lakes region of North America. When consumed, the principal active agent, gyromitrin, is hydrolyzed into the toxic compound monomethylhydrazine. Symptoms of poisoning involve vomiting and diarrhea several hours after consumption. Severe cases may lead to delirium, coma and death after five to seven days.