Asetra caviar with bottles of Russian Vodka in background Beluga Caviar: The best, rarest – and definitely the most expensive- of caviars is the Beluga Caviar, traditionally harvested in the Caspian Sea fisheries in Russia and Iran, from the white beluga sturgeon. Baluga roe is superb- large eggs, soft in texture, heavy and ripe, ranging from pale silver to black in color. By far the highest quality caviar you can get, with the most superior flavor. Soft, buttery taste, with a delicate and sweet flavor