Wrong apperception, shunning cat food (9)
I believe the answer is:
pepperoni
'food' is the definition.
(I've seen this before)
'wrong apperception shunning cat' is the wordplay.
'wrong' is an anagram indicator.
'shunning' suggests deleting specific letters.
'apperception' with 'cat' taken out is 'pperepion'.
'pperepion' is an anagram of 'PEPPERONI'.
(Other definitions for pepperoni that I've seen before include "spicy stuff" , "Seasoned beef/pork sausage" , "Hard, spicy beef and pork sausage" , "Spicy snacks" , "Highly-seasoned sausage" .)