European plaster covering salad (6,8)
I believe the answer is:
french dressing
'covering salad' is the definition.
The answer and definition can be both things that one consumes for nourishment as well as being singular nouns.
Perhaps there's an association between them I don't understand?
'european plaster' is the wordplay.
'european' becomes 'french' (France is in Europe).
'plaster' becomes 'dressing' (I can't justify this - if you can you should believe this answer much more).
'french'+'dressing'='FRENCH DRESSING'
Can you help me to learn more?
(Other definitions for french dressing that I've seen before include "Maybe relish" , "vinaigrette!'" , "haute couture?" , "Something going on salad" , "sauce for salad" .)