Bring back unlimited salt in rice cake (6)
I believe the answer is:
eclair
'cake' is the definition.
(eclair is a type of cake)
'bring back unlimited salt in rice' is the wordplay.
'bring back' says the letters should be written backwards.
'unlimited' says to take the centre (remove the limits/outer letters).
'in' means one lot of letters goes inside another.
The middle letters of 'salt' are 'al'.
'al' put into 'rice' is 'rialce'.
'rialce' in reverse letter order is 'ECLAIR'.
(Other definitions for eclair that I've seen before include "teatime treat?" , "Lacier (anag.)" , "Long (but not long-lasting) cake" , "Comedienne" , "Sweet thing" .)