Every year we age a special batch of our much-loved Russian Imperial Stout in Bourbon barrels. The depth, intensity, and complexity of the flavor profile of this special release, like its predecessors, make it a worthy tribute to Old Rasputin. This year, two variants of barrel aged Old Rasputin were produced -- one in rye whiskey barrels, and the other in wheat whiskey barrels. Old Rasputin aged in Wheat Whiskey Barrels. First release XVIII (2015).