Slow-cooked dish (4)
I believe the answer is:
stew
'slow-cooked dish' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for stew that I've seen before include "Cook - hash" , "Worried agitation" , "Large watercourse" , "Casserole" , "Ragout or burgoo" .)