Royal Siberian Caviar, sometimes called baerii caviar, is produced by Siberian sturgeon (acipenser baerii). Siberian is a fine-grained caviar recognised for its pure, elegant flavour and exquisite length which is both fine and clear. Colours range from black/grey all the way to black/brown tones. Attilus Royal Siberian caviar is Malossol which means 'lightly salted', salt content being less than 4%.