Cook gives animal imitations, we're told (6)

I believe the answer is:

braise

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'cook' is the definition.
(I know that braise is a type of cook)

I can't explain the rest of the clue.

(Other definitions for braise that I've seen before include "Fry and then stew (food)" , "Fry then stew (meat)" , "Heat slowly" , "Cook by stewing" , "Cook slowly with little water in closed container" .)

I've seen this clue in the Evening Standard.

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