Tea in tsarina’s samovar (5)
I believe the answer is:
assam
'tea' is the definition.
(I've seen this before)
'in tsarina's samovar' is the wordplay.
'in' indicates a hidden word.
'ASSAM' can be found hidden inside 'tsarinas samovar'.
(Other definitions for assam that I've seen before include "region out east" , "Indian state known for its tea production" , "Indian tea growing area" , "Asian area?" , "source of tea?" .)