Crossword Genius

Such cakes are black but not burnt (7)

Ross

I believe the answer is:

pomfret

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'such cakes are' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how they can define each other.

I can't explain the remainder of the clue.

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(Other definitions for pomfret that I've seen before include "cake, Yorkshire style" , "sort of cake" , "Round flat liquorice sweet - Asian food fish" .)

I've seen this clue in the Evening Standard.
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