Sweet treat that is removed in bits from selection? (4)

I believe the answer is:

choc

I'm a little stuck... Click here to teach me more about this clue!

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

I don't understand the remainder of the clue.

(Another definition for choc that I've seen is " Sweet (abbr)".)

I've seen this clue in The Telegraph.

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