Steak thus? Congratulations! (4,4)

I believe the answer is:

well done

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

I can't explain the rest of the clue.

(Other definitions for well done that I've seen before include "Commendation for achievement" , "How one might like one's steak?" , "Bravo!" , "Congratulations - cooked right through" , "expression of praise" .)

I've seen this clue in the Sydney Morning Herald.

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