Money? Some people like jam on it! (5)
I believe the answer is:
bread
'money?' is the definition.
(slang term for money)
'people like jam on it' is the wordplay.
I cannot really understand how this works, but
'on' could be 're' (regarding) and 're' is found in the answer.
The remaining letters 'bad' 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).
'some' is the link.
Can you help me to learn more?
(Other definitions for bread that I've seen before include "Dosh (slang)" , "Eg, pumpernickel" , "Staple food" , "Loaf; money" , "Foodstuff; money" .)