Does it help the greengrocer make a packet? (6,4)
I believe the answer is:
string bean
'packet?' is the definition.
Although both the answer and definition are singular nouns, I cannot see how one could define the other.
'does it help the greengrocer make a' is the wordplay.
I cannot really see how this works, but
'it' could be 't' (abbreviation. e.g. in 'tis) and 't' is found within the answer.
'a' could be 'an' and 'an' is located in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Another definition for string bean that I've seen is " What may be French or runner".)