Spanakopita cheese (4)
I believe the answer is:
feta
'spanakopita cheese' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for feta that I've seen before include "Low-fat cheese" , "Soft Greek cheese" , "Greek salad cheese" , "Salty goat or sheep milk cheese" , "10 down cheese" .)