Sweet cracker (6)
I believe the answer is:
bonbon
This might be a double definition.
'sweet' is the first definition.
(bonbon is a kind of sweet)
'cracker' is the second definition.
The answer and definition can be both things that one consumes for nourishment as well as being singular nouns.
Maybe they are linked in a way I don't understand?
Can you help me to learn more?
(Other definitions for bonbon that I've seen before include "Sweetie" , "Candy, doubly good in France?" , "Confection" , "a tasty sweet - in France" , "French sweet" .)