Grub to get on with? (4)
I believe the answer is:
fare
'grub' is the definition.
(I've seen this in another clue)
'on with?' is the wordplay.
I cannot quite understand how this works, but
'on' could be 're' (regarding) and 're' is located in the answer.
The remaining letters 'fa' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
'to get' acts as a link.
Can you help me to learn more?
(Other definitions for fare that I've seen before include "Amount charged" , "What traveller pays" , "going rate?" , "Taxi hire cost" , "Taxi charge; food" .)