It helps PC remember term for biscuit? (6)

I believe the answer is:

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'for biscuit?' is the definition.
('cookie' can be a synonym of 'biscuit')

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for cookie that I've seen before include "Biscuit; computer data" , "Piece of text that a website puts into a computer" , "An American sweet biscuit" , "US bicky" , "Data packet; biscuit" .)

I've seen this clue in The Times.

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