I saw yesterday that the Crimean Jews - which were an ancient kehillah - had their own nusach, called "Nusach Kafa" (נוסח כפא). I was wondering in what ways was this nusach unique? What special traditions/customs did they have? Note: There's a book called המחזור לכמנהג כפא: תולדותיו והתפתחותו in the National Library of Israel, but can only be accessed from there, and the library is closed these days.
The only custom I've previously come across from that community (cited by Siddur Otzar Hatefillot, Volume 2, page 46) is that they had the custom to read Megillat Antiochus on Chanukah.
A quick search on through Otzar Hatefillot (using Otzar Hachochma) comes up with various other strange or interesting minhagim. Here are some:
- They added various adjectives to "Kulam Ahuvim" (p. 258)
- There are a bunch of significant changes to the Amidah (see pages 305, 313, 324-6, 330, 337-8, 340, 343, 345, 349, 357, 359, 364)
- They shortened Tachanun a bit (page 403)