Yellow spice used in curry (8)
I believe the answer is:
turmeric
'yellow spice used in curry' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for turmeric that I've seen before include "Yellow spice used in curry" , "Powdered plant stem used as condiment" , "A curry spice; cruet rim (anag.)" , "'Bright yellow powder, used in curry (8)'" , "Condiment that dyes yellow" .)