A solution I thought was bullet proof, farad, turned out to be wrong. Once I had reversed these letters, I was able to solve the clue to trumpet-shaped.
I then "Onelooked" the remaining clues:
California eatery shot round posh old blusterer (9)
Eighth letter penned by ethnic Muslim, a tribal avenger (10).
I am not entirely sure how you the cryptic parts fit in.
Cacafuego is "cafe" around "u" and "o" for old, leaving "cag" to account for.
Kurdditcha is "kurd" plus "aitch", but I don't know where the extra "d" comes from or why the "a" in aitch has been dropped to the bottom.
Any ideas? Aperio