Dish containing rice and capers mainly brought back by the French (6)
I believe the answer is:
paella
'dish' is the definition.
(paella is a kind of dish)
'mainly brought back by the french' is the wordplay.
'mainly' becomes 'leap' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'brought back' is a reversal indicator.
'by' is a charade indicator (letters next to each other).
'the french' becomes 'la'.
'leap' in reverse letter order is 'pael'.
'pael'+'la'='PAELLA'
'containing rice and capers' acts as a link.
I am not very happy about this link. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for paella that I've seen before include "Al, leap into the Spanish dish" , "Spanish course" , "Spanish dish of rice, chicken etc cooked in large pan" , "Traditional Spanish dish" , "Dish (not English)" .)