Turks are confused about a high-class pickled cabbage (10)
I believe the answer is:
sauerkraut
'pickled cabbage' is the definition.
The answer and definition can be both things that one consumes for nourishment as well as being singular nouns.
Perhaps you can see a link between them that I can't see?
'turks are confused about a high-class' is the wordplay.
'confused' indicates an anagram.
'about' means one lot of letters goes inside another.
'high class' becomes 'U' (as in U and non-U speech).
'turks'+'are'='turksare'
'turksare' with letters rearranged gives 'sauerkrt'.
'a'+'u'='au'
'sauerkrt' enclosing 'au' is 'SAUERKRAUT'.
Can you help me to learn more?
(Other definitions for sauerkraut that I've seen before include "German course" , "German pickled cabbage" , "Shredded cabbage fermented in brine" .)