A can of 300 grams of caviar can cost more than the salary of an office worker for three months. So why is caviar so expensive? Catching a large number of wild sturgeons has almost endangered them, but in order to meet the market demand, people began to build sturgeon farms, which are sturgeon breeding bases in Russia. They need to collect 20,000 sturgeon eggs every year to make caviar.

First, the first obstacle that the breeding base needs to overcome is the cold weather. In order to make sturgeon survive in the cold winter, they will use the heat of the power plant to heat the temperature of the river. Although this method is expensive, it is not worth mentioning in the face of high profits. Each sturgeon needs to be raised for more than ten years before it can collect sturgeon eggs, but they can also bring benefits to farmers in the process of growth. When the mother fish reaches the age of six, it will be pregnant with a baby. However, these eggs will not be made into caviar, but will be cultivated into fry.

Second, the difficulty is to take out the fish eggs without damaging the sturgeon. This is a sturgeon breeding base in Russia. They need to collect 20,000 sturgeon eggs every year to make caviar. Now workers have to take out fish eggs from this batch of female fish to cultivate fry. Then, one of the workers used ultrasound to scan the belly of sturgeon, and they needed to remove all the eggs before they matured. The worker used a special tool to open the sturgeon's stomach, and another worker gently pressed his stomach. Then, the eggs in the sturgeon's stomach poured out. After waiting for artificial egg squeezing, they will support each sturgeon. They will take out up to three kilograms of fish eggs from each sturgeon, which is for their health. After weighing, the sturgeon will be sent back to the river to continue to grow. Now, the workers pour the fish eggs into the barrel containing the male fish's body fluids, gently stir them, and then put them into the incubator. This procedure will determine the survival of the embryo.

Third, they must control the environment in the incubator. After the eggs are hatched, it is necessary to provide better water quality for the baby fish, so they need to be moved to this blue crab tank, where the flowing fresh water will make the baby fish thrive. 15 days later, the baby fish will become young fish, and these young fish will grow to about four pounds in two years. Now workers need to put them in the corresponding cages according to the size of the young fish, and they will spend about ten years here. The top caviar comes from healthy sturgeons, and these known sturgeons will be taken out of their eggs and the fish will be sold to vendors.

Fourth, the workers put the fish eggs on the fine net, at the same time, they were graded according to their size, and then they were sent to the nearby workshop for cleaning. Even a small piece of fat could destroy caviar worth more than 100,000 RMB, so the workers would repeatedly clean the fish eggs until all the residual fat and impurities were washed away. After all the cleaning is completed, they will test the caviar for three days. During this process, once the residual microorganisms are found, these expensive fish eggs will also be thrown away. Caviar is very perishable, so workers need to add edible salt preservatives to it. The more edible salt is added, the longer the shelf life. But the price of caviar will also decrease, so they need to calculate the salt content accurately. The salt content of fresh caviar is 2%, and the salt content of cheaper caviar is 7%. Finally, the workers will put the caviar in a jar, and after simple packaging, it will be transported to the highest-end restaurant in the world.