This Camembert is not too bad (4,6)
I believe the answer is:
hard cheese
'this camembert is not too' is the definition.
The definition suggests a singular noun which matches the answer.
'bad' is the wordplay.
I cannot quite see how this works, but
'bad' could be 'hard' (similar in meaning) and 'hard' is found in the answer.
The remaining letters 'cheese' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for hard cheese that I've seen before include "Expression of sympathy" , "Eighteen [EMMENTAL], for instance" , "Che sfortuna!" , "commiserating words" , "Pecorino" .)