Savory food quality (5)
I believe the answer is:
umami
'savory food quality' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for umami that I've seen before include "Fifth flavour" , "Savoury flavour" , "Newly discovered taste" , "acquired taste perhaps" , "Savoury taste sensation produced by glutamates - I, a mum (anag)" .)