Food of the gods in Greek mythology (8)
I believe the answer is:
ambrosia
'food of the gods in greek mythology' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for ambrosia that I've seen before include "Siam boar as food for the gods" , "Heavenly food" , "food for Olympians" , "Gods' dinner?" , "Food of Greek and Roman gods" .)