Spice mixture (3)
I believe the answer is:
rub
'spice mixture' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for rub that I've seen before include "Abrade" , "Central difficulty" , "Ay, there's the - (Hamlet)" , "Apply friction to - difficulty" , "Massage or buff" .)