Fishy ingredient for stuffing (3)
I believe the answer is:
'fishy ingredient for stuffing' is the definition.
I can't tell whether this defines the answer.
'ingredient for stuffing' is the wordplay.
'ingredient' says the answer is hidden in the clue (I've seen 'ingredient of' mean this).
'FIN' can be found hidden inside 'for stuffing'.
Can you help me to learn more?
(Other definitions for fin that I've seen before include "A fish uses it to steer itself" , "Found on a fish" , "For movement and balance in fish" , "Paddle-like organ" , "Fish propeller; end (Fr.)" .)