I just stumbled upon this which I thought was a bit of fun, Stefan Strasse offers lily cooking courses:
http://www.lilienarche.de/Lili... (in German)
Would have been interesting to know if he cooks them all or if he has some preferences. One would assume he has some experience in both eating and cooking them as he is confident enough to hold courses, but unfortunately he doesn't disclose much on the web site.
