Crossword Genius

What a poacher may cook for breakfast (4)

Ross

I believe the answer is:

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'breakfast' is the definition.
The answer and definition can be both things that one consumes for nourishment as well as being singular nouns.
Maybe they are linked in a way I don't understand?

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for eggs that I've seen before include "Roe" , "Don't put all these in one basket" , "Oval food items" , "Contents of nests" , "Reproductive cells" .)

I've seen this clue in the Evening Standard.
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