Welcome line in fried food (6)
I believe the answer is:
salute
'welcome' is the definition.
(both are a kind of greeting)
'line in fried food' is the wordplay.
'line' becomes 'l' (used when specifying particular lines from a poem).
'in' indicates putting letters inside.
'fried food' becomes 'saute' (I've seen this before).
'l' inserted within 'saute' is 'SALUTE'.
(Other definitions for salute that I've seen before include "Ceremonial firing of guns" , "Greet in a friendly way" , "Greet with a sign" , "Gesture of greeting" , "Hail respectfully" .)