The people of Frankfurt, historically, have celebrated a mini-Purim ("פורים קטן") on 20 Adar, to commemorate their salvation from threat of extinction (see this article for a summary of the events).
Someone mentioned to me that he didn't believe that it was celebrated anymore; now I wonder if this is correct.
Do the Jews of Frankfurt (current residents, or descendants of Jews who lived in Frankfurt) still celebrate Frankfurt Purim? Do they read the megillah that was written for the event? With food and drink? Or do they not celebrate it at all?
Related question -- does any other Jewish group, besides for the Frankfurt Jews, celebrate this miracle?