Russian Prime "A" Osetra (latin: Acipenser gueldenstaedtii) Caviar from the Caspian Sea is a superb Russian osetra caviar, second only to our Russian Golden Imperial Caviar. This caviar has larger grains with crisp, subtle nutty flavor and textures. Color is golden brown. Our 1, 2, and 4 ounce selections come in glass jars. Our 1.75 and 5.5 ounce selections come in attractive crystal glass jars, perfect for gift giving. All other sizes come in elegant traditional tins. Labeling may vary slightly. Shelf life 4 to 6 weeks refrigerated (ideally at 28 to 32 degrees).