Portion of whiting (not chicken) in batter! (3)

I believe the answer is:

hit

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'chicken in batter' is the definition.
'hit' can be an answer for 'batter' (I've seen this in another clue). I am unsure of the 'chicken in' bit.

'portion of whiting not' is the wordplay.
'portion of' says the answer is hidden in the clue.
'HIT' is hidden in the letters of 'whiting not'.

Can you help me to learn more?

(Other definitions for hit that I've seen before include "Sock" , "recording in the charts" , "Rap" , "Adversely affected" , "Visit to website" .)

I've seen this clue in the Evening Standard.

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