Gourmet Club by Juha Wuolijoki

6.10

"Gourmet Club" follows a doctor who belongs to a small but exclusive gourmet club, in which the five upper-class members take turns providing the main course, wagering as to who can identify a mystery exotic ingredient. Things get interesting when the doctor's gambling problem catches up with him. Desperate, he comes up with the idea to use a truly shocking mystery ingredient to fool his colleagues, but he gets more than he bargained for when the mystery meal has a surprising and powerful effect on the members.