British awfully jealous about top-notch French wine (10)
I believe the answer is:
beaujolais
'french wine' is the definition.
(I've seen this before)
'british awfully jealous about top-notch' is the wordplay.
I cannot really understand how this works, but
'british' could be 'b' (abbreviation e.g. in 'BBC') and 'b' is present in the answer.
'about' could be 'a' (abbreviation in Chambers) and 'a' is found within the answer.
'top' could be 'ai' (I've seen this in other clues) and 'ai' is found in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for beaujolais that I've seen before include "Light red wine from south-east France" , "drink" , "French light red wine" , "Burgundy wine" .)