Crossword Genius

Cook some rhubarb or tripe (12)

Ross

I believe the answer is:

fiddlesticks

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'tripe' is the definition.
(I've seen this before)

'cook some rhubarb' is the wordplay.
'cook' becomes 'fiddle' (I've seen this before).
'some rhubarb' becomes 'sticks' (I am not sure about this - if you are sure you should believe this answer much more).
'fiddle'+'sticks'='FIDDLESTICKS'

'or' acts as a link.

Can you help me to learn more?

(Other definitions for fiddlesticks that I've seen before include "tripe" , "Bilge" , "Bother!" , "Blast!" , "Violin bows - rubbish!" .)

I've seen this clue in The Times.
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