Osetra refers to a type of caviar produced from the eggs of the Osetra sturgeon, primarily found in the Caspian and Black Sea regions. Known for its rich, nutty flavor, Osetra caviar is considered one of the finest types of caviar available. The eggs are medium-sized and range in color from dark gray to golden brown. The Osetra sturgeon is a species that can live for several decades and reach significant sizes. Due to overfishing and habitat loss, this species is now considered vulnerable, leading to strict regulations on caviar production. Sustainable farming practices are being developed to ensure the future of Osetra caviar.