Educated woman eating a yoghurt dish (5)
I believe the answer is:
raita
'yoghurt dish' is the definition.
(type of Indian side dish)
'educated woman eating a' is the wordplay.
'educated woman' becomes 'rita' (ref to play and film Educating Rita).
'eating' is an insertion indicator.
'rita' enclosing 'a' is 'RAITA'.
(Other definitions for raita that I've seen before include "fare from India" , "Yoghurt-based Indian condiment" , "Indian side dish of yogurt and chopped cucumber" , "Indian yogurt and vegetable dish" , "Indian recipe" .)