Pastis flavoring (5)
I believe the answer is:
anise
'pastis flavoring' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for anise that I've seen before include "Plant providing flavour similar to liquorice" , "Herb with aromatic seeds" , "Plant with aromatic seeds" , "Plant with seeds used as flavouring" , "Aromatic Mediterranean plant" .)