This sturgeon of Russian origin is an ancient species, native to the Caspian, Black and Azov Seas. Its weight can exceed 60 kg. Caviar is of compact consistency. Its palate has a hazelnut aroma, while the colour of the roe varies from dark brown to amber. Characteristic of the osetra is its persistence on the palate and the delicious marine note that evokes oysters. It is considered to be one of the most refined caviars. Its eggs are large in size (2.7 to 3.2mm). 10 to 14 years are required before this caviar can be harvested.