Sturgeon caviar is also known as black caviar, which is the real caviar. According to the different species of sturgeon, sturgeon caviar also has a grade:
The first level - Beluga Caviar (BelugaCaviar)
The Beluga sturgeon's eggs are of the best quality, and used to make Beluga Caviar is the world's top. Beluga sturgeon grows very slowly, from juvenile to mature to spawn in about 18 to 20 years, less than 100 fish a year, and overfishing and environmental degradation has made the Beluga sturgeon endangered.
The world's most expensive Iranian caviar is made from the eggs of the extremely rare 100-year-old Beluga sturgeon, and is sold by the gram, packaged in 24-carat gold jars that cost $25,000 a jar.
Second grade - OscietraCaviar
Second-grade Oscietra sturgeon are smaller, weighing only 80 to 200 pounds, and their years of maturity have been reduced to 12 to 14 years. Its roe is grayish-brown with a dark-golden sheen, and it has a distinctive, nutty flavor.
Tertiary - Sevruga Caviar
The more common Sevruga Caviar takes only seven years to mature and is grayish-black in color, similar to Beluga Caviar, but with smaller particles than the latter.
Two, black caviar how to buy
1, good caviar appearance soft and round, fresh and full, juice black slightly gray or brown, eat in the mouth a little light ocean breath, aftertaste but mellow and sweet, and should not have too high salinity.
2, the best quality fish eggs, with the least amount of salt, not more than 5% of the eggs, this caviar is called "Maloso" (low salt) caviar. If the eggs are broken or flattened, they are not good. Another type of caviar that is not broken but tastes elastic like jelly, lacks flavor, and has a greenish or bluish color in the black juice is the worst quality.
3, caviar has three, six, nine grades, quality and taste superb to be made with the eggs of Beluga caviar (Beluga) caviar, followed by Oscietra sturgeon (Oscietra), again is the flash sturgeon (Sevruga), when you buy to pay attention to see clearly.