Greek bread spread (6)
I believe the answer is:
tahini
'greek bread spread' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for tahini that I've seen before include "Paste of sesame seeds" , "Sesame-seed based foodstuff" , "Sesame paste; in a hit (anag.)" , "Sesame seed paste" .)