Yellow spice (7)
I believe the answer is:
saffron
'yellow spice' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for saffron that I've seen before include "Orange-yellow spice" , "The stigma" , "additive found in rice" , "Fans for, say orange food flavour and colouring" , "Flavouring from a kind of crocus" .)