Soup seasoning (4)
I believe the answer is:
herb
'soup seasoning' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for herb that I've seen before include "Chives or coriander, say" , "Plant used in medicine or cookery" , "Rosemary perhaps" , "Aromatic plant used in cookery" , "plant with useful properties" .)