Shocking film, possibly, that's served up at Christmas? (6)

I believe the answer is:

turkey

I believe this is a double definition.

'shocking film possibly' is the first definition.
(a really bad film is a 'turkey')

'that's served up at christmas?' is the second definition.
(turkey is eaten at Christmas)

(Other definitions for turkey that I've seen before include "Country; Christmas bird" , "Country - fowl" , "Gobbling bird" , "Christmas bird or theatrical flop" , "Christmas dinner?" .)

I've seen this clue in The Times.

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