Interrogator, perhaps, has his five cents worth of bread (12)

I believe the answer is:

pumpernickel

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'bread' is the definition.
(pumpernickel is a kind of bread)

I don't understand the remainder of the clue.

(Other definitions for pumpernickel that I've seen before include "German ryebread" , "Slightly sour German black bread" , "Coarse dark rye bread" , "Coarse ryebread" , "German coarse rye bread" .)

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

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