It comes from out East (3)
I believe the answer is:
tea
'it' is the definition.
The definition suggests a singular noun which matches the answer.
'from out east' is the wordplay.
'from' says the answer is hidden in the clue.
'TEA' is hidden within 'out east'.
'comes' is the link.
Can you help me to learn more?
(Other definitions for tea that I've seen before include "Principally" , "Char" , "Tisane" , "The cup that cheers but not inebriates" , "A light meal - eat up" .)