Caviar is produced from a special category of fish, which are called sturgeon because of their particular shape. As a dish is available in 3 types:
Caviar beluga is the most expensive and comes from the largest in size and the richest sturgeon that lasts more than 100 years.
Caviar asetra, has a brown-gray color with golden shades. It is produced by a medium-sized sturgeon that lives about 50 years and its flesh has crisp texture and intense aroma.
Caviar sevruga has a dark gray color and rich aroma. It is produced from the smaller in size sturgeon, which live up to 30 years.