Ingredient of chicken feed, you know (3)

I believe the answer is:

ken

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'know' is the definition.
(Scottish term meaning to know)

'ingredient of chicken feed' is the wordplay.
'ingredient of' indicates the answer is hidden within the clue.
'KEN' is hidden in the letters of 'chicken feed'.

'you' is the link.
I am not very happy about this link. It may belong to another bit of the clue.

Can you help me to learn more?

(Other definitions for ken that I've seen before include "Understanding - boy's name" , "Know; man's name" , "Notice" , "One's range of knowledge" , "Identify; -- Livingstone" .)

I've seen this clue in the Evening Standard.

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