Brings back rice (about a pound) and a cake (6)
I believe the answer is:
eclair
'cake' is the definition.
(eclair is a type of cake)
'brings back rice about' is the wordplay.
'brings' becomes 'la' (I can't justify this - if you can you should give a lot more credence to this answer).
'back' shows that the letters should be reversed in order.
'about' is an insertion indicator.
'rice' in reverse letter order is 'ecir'.
'la' going within 'ecir' is 'ECLAIR'.
'a pound and a' acts as a link.
I am not very happy about this link. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for eclair that I've seen before include "Finger-shaped cream-filled cake of choux pastry" , "Food" , "Comedienne" , "Finger-shaped cake with cream filling" , "I clear off with thin chocolate cake" .)