Sweets that make money (5)
I believe the answer is:
mints
'sweets' is the definition.
(mint is a kind of sweet)
'make money' is the wordplay.
'make' becomes 'mint' (I've seen this before).
'money' becomes 's' (I can't justify this - if you can you should give a lot more credence to this answer).
'mint'+'s'='MINTS'
'that' is the link.
Can you help me to learn more?
(Other definitions for mints that I've seen before include "Pennyroyals" , "produces coinage" , "Plants including the pennyroyal" .)