Spice — met gnu (anag) (6)
I believe the answer is:
nutmeg
(Other definitions for nutmeg that I've seen before include "Asian tree whose aromatic seed is used as spice when grated or ground" , "(In soccer) kick the ball between an opponent's legs" , "Hard seed of tropical tree ground as spice" , "Spice to grate" , "Spicy seasoning - hard fruit for little Margaret?" .)