Crossword Genius

Is such a blonde a darling? (5)

Ross

I believe the answer is:

honey

I'm a little stuck... Click here to teach me more about this clue!

'a darling?' is the definition.
(I've seen this in another clue)

'is such a blonde' is the wordplay.
I cannot really understand how this works, but
'a' could be 'one' and 'one' is located in the answer.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for honey that I've seen before include "Food from hive" , "Treasure" , "sweetheart" , "Excellent; magnificent" , "Made by bees from nectar" .)

I've seen this clue in the Evening Standard.
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