In the list of seafood delicacies, black caviar occupies one of the leading positions due to its taste characteristics and high content of nutrients, vitamins and minerals. Black caviar is obtained from sturgeon fish, such as beluga, Russian and Siberian sturgeon, sterlet, stellate sturgeon. Despite its name, true black caviar can range in color from almost white to black, and the most expensive black caviar in the world, sourced from albino fish, has a golden hue. The color of black caviar depends, among other things, on the age of the fish. It is believed that black caviar is the more valuable the lighter it is and the older the fish from which it was obtained.
The price for grainy black caviar of light shades, obtained from adults, will be higher. The high cost of black caviar is explained not only by the uniqueness of its useful and gustatory qualities, but also by the rarity and complexity of its breeding. Fish of the sturgeon family live up to a hundred years and spawn only a few times during their lives. Currently, sturgeon fish are endangered and their catch in the wild is almost universally banned. An alternative to wild fishing is the breeding of fish on special sturgeon farms.