Pungent salad root (6)
I believe the answer is:
radish
'pungent salad root' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for radish that I've seen before include "Hard vegetable" , "3 down" , "Edible small root" , "Sir had this vegetable" , "Root eaten raw in salads" .)