Tapenade ingredients (6)
I believe the answer is:
olives
'tapenade ingredients' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for olives that I've seen before include "Small green Mediterranean tree fruits" , "The fruits are important source of oil" , "Trees grown for their oil-producing fruit" , "Small green Med. tree-fruits" , "Fruits from the tree of peace" .)