Long poems involving spice? (5)
I believe the answer is:
epics
'long poems' is the definition.
(I've seen this before)
'involving spice?' is the wordplay.
'involving' indicates anagramming the letters.
'spice' is an anagram of 'EPICS'.
(Other definitions for epics that I've seen before include "Spice up with adventurous poems or stories" , "Long poems about great events" , "Long tales of heroic deeds" , "Long narrative poems telling of deeds of heroes" .)