Crossword Genius

Growth of goods to eat in -- passable when served up (6)

Ross

I believe the answer is:

gingko

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'growth' is the definition.
Although both the answer and definition are singular nouns, I can't see how they can define each other.

'of goods to eat in passable when served up' is the wordplay.
I cannot quite understand how this works, but
'of' could be 'o' and 'o' is found within the answer.
'in' is within the answer.
'goods' could be 'gg' (I've seen this in other clues) and 'gg' is found in the remaining letters.
A single letter 'k' remains which might be clued in a way I don't understand.
This explanation may well be incorrect...

Can you help me to learn more?

(Another definition for gingko that I've seen is " Chinese tree".)

I've seen this clue in The Telegraph.
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