Enjoy food additive (6)
I believe the answer is:
relish
I believe this is a double definition.
'enjoy' is the first definition.
(I know that enjoy can be written as relish)
'food additive' is the second definition.
(relish is a type of condiment)
(Other definitions for relish that I've seen before include "savoury stuff" , "love" , "Enjoy greatly - such sauce!" , "Sauce; zest" , "Gusto" .)