What are bananas? Mistake I discovered among most of the cleverest (7)
I believe the answer is:
berries
'among most of the cleverest' is the definition.
I can't judge whether this defines the answer.
'what are bananas? mistake i' is the wordplay.
I cannot quite understand how this works, but
'mistake' could be 'err' (to err is to make a mistake or blunder) and 'err' is found within the answer.
'i' is found in the answer.
The remaining letters 'bes' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
'discovered' acts as a link.
Can you help me to learn more?
(Other definitions for berries that I've seen before include "Beer, sir? (anag.)" , "They can be black, blue or straw" .)