Jocular girl consuming a piece of cake (5)

I believe the answer is:

jokey

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'cake' is the definition.
I don't know anything about this answer so I can't judge whether this works.

'jocular girl consuming a piece' is the wordplay.
'jocular girl' becomes 'joey' (I am not sure about the 'jocular' bit.).
'consuming' is an insertion indicator.
'a piece' becomes 'k' (abbreviation for King).
'joey' enclosing 'k' is 'JOKEY'.

'of' acts as a link.

Can you help me to learn more?

(Other definitions for jokey that I've seen before include "ready with gag" , "Inclined to quip" , "Amusing" .)

I've seen this clue in the Evening Standard.

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