Also known as Drakes Drakonic Imperial Stout
Commercial description
Russian Imperial Stouts were originally brewed in the early 20th century in England for export to the Imperial Court of Russia. These beers were made with a higher starting gravity and higher hopping rates to make the voyage by sea. Drake’s Imperial Stout is brewed to an original gravity of 21.5°P. by a mall bill of 91% Malted Barley, 4% Crystal Malt, 3% Roasted Barley and 2% Chocolate Malt. Chinook hops were added to balance the beer. A hearty yeast strain was used to create a beer that weighs in at a robust 8.75% Alc. by Vol. A Pint a Day Keeps Scurvy Away!
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Drakes Drakonic Imperial Stout

The brewer markets this same or near-same product by more than one names. This can be the result of a brewer distributing this beer under different names in different countries, or the brewer simply changing the name, but not the recipe at different points in time.