A roll with salsa for one is plenty (9)
I believe the answer is:
abundance
'one is plenty' is the definition.
(I've seen this before)
'a roll with salsa' is the wordplay.
'roll' becomes 'bun' (synonyms).
'with' means one lot of letters go next to another.
'salsa' becomes 'dance' (I can't justify this - if you can you should give a lot more credence to this answer).
'a'+'bun'+'dance'='ABUNDANCE'
'for' acts as a link.
Can you help me to learn more?
(Other definitions for abundance that I've seen before include "great deal" , "Ban due can be plenty" , "Danube can flow with plenty" , "Nine tricks" , "State of plenty" .)