Cobb or Caesar (5)
I believe the answer is:
salad
'cobb or caesar' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for salad that I've seen before include "One that may be dressed for dinner" , "A dish of lettuce and vegetables" , "Mixed food" , "Lettuce, cucumber etc" , "A cold meal with lots of lettuce" .)