Fry quickly in a little fat (5)
I believe the answer is:
saute
'fry quickly in a little fat' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for saute that I've seen before include "Fry in a small amount of fat" , "Fried quickly in a little fat" , "Fried quickly in small amount of fat" , "Fried food" , "fried spuds and the like" .)