Divine tea is brewed in brother's room (9)
I believe the answer is:
celestial
'divine' is the definition.
(thesaurus)
'tea is brewed in brother's room' is the wordplay.
'brewed' indicates anagramming the letters.
'in' indicates putting letters inside.
'brother's room' becomes 'cell' (room inhabited by a monk).
'tea'+'is'='teais'
'teais' is an anagram of 'estia'.
'estia' placed into 'cell' is 'CELESTIAL'.
(Other definitions for celestial that I've seen before include "Relating to the heavens" , "Heavenly" .)