Container where nectar is processed (8)
I believe the answer is:
canister
'container' is the definition.
(canister is a kind of container)
'nectar is processed' is the wordplay.
'processed' is an anagram indicator.
'nectar'+'is'='nectaris'
'nectaris' is an anagram of 'CANISTER'.
'where' is the link.
(Other definitions for canister that I've seen before include "Container for e.g. tea" , "Container for storing dry food" , "Tea-caddy" , "Container for a film reel" , "Jar (of e.g. tea, sugar)" .)