Just in case anyone's reading this and thinking "man, I've got to get me some of that sweet ergot": that's probably not the best idea.
"The symptoms [of ergotism] can be roughly divided into convulsive symptoms and gangrenous symptoms.
"Convulsive symptoms of ergotism
"Convulsive symptoms include painful seizures and spasms, diarrhea, paresthesias, itching, mental effects including mania or psychosis, headaches, nausea and vomiting.
"Gangrenous
"The dry gangrene is a result of vasoconstriction induced by the ergotamine-ergocristine alkaloids of the fungus. It affects the more poorly vascularized distal structures, such as the fingers and toes. Symptoms include desquamation or peeling, weak peripheral pulses, loss of peripheral sensation, edema and ultimately the death and loss of affected tissues..."