Herbal flavouring (7)
I believe the answer is:
aniseed
'herbal flavouring' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for aniseed that I've seen before include "Plant" , "Aromatic flavouring" , "Die sane (anag)" , "Flavouring herb" , "Natural flavouring" .)