Cooked in oil (4-5)
'cooked in oil' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for fried that I've seen before include "Cooked in oil/fat" , "Cooked on a hot surface" , "Cooked in fat" , "Cooked in oil" , "Such as cooking chips" .)
(Another definition for deep-fried that I've seen is " like some Glasgow chocolate bars?".)