Stew ingredient gets complaint (4)
I believe the answer is:
beef
'stew' is the definition.
(beef stew is a kind of stew)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for beef that I've seen before include "joint, perhaps" , "Argument" , "Bovine flesh" , "Grumble over cattle meat?" , "Small errand" .)