Royal Siberian Caviar (Pasteurised)Siberian Sturgeon (Baerii) Caviar Royal Siberian Caviar, sometimes called baerii caviar, is extracted from the Siberian sturgeon (acipenser baerii). It is a fine grained caviar recognised for its pure, elegant flavor and exquisite length which is both fine and clear. Grain colours range from black grey all the way to black brown tones. Attilus Royal Siberian Caviar in glass is malossol caviar which literally means lightly salted, salt content being