Food account put into good French (5)
I believe the answer is:
bacon
'food' is the definition.
(bacon is a kind of food)
'account put into good french' is the wordplay.
'account' becomes 'ac'.
'put into' indicates putting letters inside.
'good french' becomes 'bon'.
'ac' put within 'bon' is 'BACON'.
(Other definitions for bacon that I've seen before include "successfully brought home" , "The meat to bring home for success" , "Food - essayist - painter" , "Author" , "gammon" .)