Tropical Asian tree from whose aromatic yellowish-brown bark a spice is obtained (8)
I believe the answer is:
cinnamon
(Other definitions for cinnamon that I've seen before include "Aromatic tree bark used as a spice" , "Spicy bark" , "The spice is oddly non-manic" , "Spice from dried bark" , "'Spice in con man, strangely (8)'" .)