Absinthe flavoring (5)
I believe the answer is:
anise
'absinthe flavoring' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for anise that I've seen before include "Plant with aromatic seeds" , "Plant with seeds used as flavouring" , "Plant giving ouzo flavour" , "Herb with aromatic seeds" , "Aromatic Mediterranean plant" .)