Student double-dips in South American sauce (5)
I believe the answer is:
salsa
'south american sauce' is the definition.
'salsa' can be an answer for 'sauce' (I've seen this before). I'm unsure of the 'south american' bit.
'student double-dips in' is the wordplay.
'student' becomes 'L' (learner, as in L-plates for learner drivers).
'double dips' becomes 'sasa' (I can't explain this - if you can you should give a lot more credence to this answer).
'in' indicates putting letters inside.
'l' placed within 'sasa' is 'SALSA'.
Can you help me to learn more?
(Other definitions for salsa that I've seen before include "that's hot and saucy?" , "The Latin-American sound" , "hot stuff" , "Latin American dance music" , "Latin American dance - spicy Mexican sauce" .)