Types of Caviar: Beluga, Kaluga, Ossetra, Sevruga and the Rest
Caviar type is decided by species first, farm and grade second. Species sets grain size, membrane strength, colour range, and the broad flavour direction; everything after that is handling. Here is the working map, from largest grain to smallest.
Beluga (Huso huso)
The largest grain in caviar, pale to dark grey, with a thin membrane and a soft, almost creamy break. Flavour is delicate rather than intense — low salinity, high butteriness, a long clean finish. Beluga sturgeon take 15 to 20 years to mature, which is the whole reason for the price.
Wild Caspian beluga caviar cannot be imported into the United States: the US Fish and Wildlife Service suspended imports in 2005 after listing the species as threatened. US-farmed beluga, raised domestically, is legal to buy and sell inside the US. Beluga hybrids — beluga crossed with sterlet or siberian — deliver much of the grain size on a shorter maturation cycle.
Kaluga (Huso dauricus) and kaluga hybrid
Kaluga is beluga's Amur River cousin and the closest thing to it in the tin: large grey to amber grains, a firmer pop than beluga, and a buttery, umami-forward finish. Most product on the market is a kaluga × amur (schrenckii) hybrid farmed in China, and it is the best value in large-grain caviar by a wide margin.
If you are ordering blind at a restaurant and want the "big pearl" experience without the beluga bill, this is the order.
Ossetra / Osetra (Acipenser gueldenstaedtii)
The connoisseur's default. Medium grain, colours running from dark brown-grey through amber to rare gold, and the most distinctive flavour in caviar: nutty, marine, with a walnut-and-sea-air finish that is unmistakable once you know it. Lighter, older-fish eggs command the highest prices as "golden" or "imperial" ossetra.
Ossetra is the type most worth paying up for, because the flavour difference between grades is real rather than cosmetic.
Sevruga (Acipenser stellatus)
Small, dark, intensely flavoured grains — the saltiest and most assertive of the classic Caspian three, with a briny, mineral finish. Sevruga matures faster than beluga or ossetra, so it was historically the affordable one. Iranian and Russian Caspian product is blocked from the US market; farmed sevruga fills the gap.
Siberian sturgeon (Acipenser baerii)
The workhorse of European aquaculture, farmed heavily in France, Italy, Germany, Belgium, Poland and Uruguay. Small to medium dark grains, moderate salinity, a clean nutty finish. Baerii matures in six to eight years, which makes it the entry point into real sturgeon caviar and the sensible choice for cooking, canapés, and anyone buying caviar for the first time.
White sturgeon (Acipenser transmontanus)
North America's flagship, farmed in California and now in Italy. Medium to large grains, dark grey to brown, with a buttery, faintly sweet profile and a notably clean finish. It is the closest domestic answer to ossetra and the most reliable US-produced caviar.
Sterlet, adriatic and the small species
Sterlet (Acipenser ruthenus) is the small, fast-maturing sturgeon behind the Latvian and Russian tins, and the parent of the albino strain that yields the near-mythical golden Almas. Adriatic sturgeon (A. naccarii) is Italy's protected native species. Both give small, delicate grains that reward being eaten alone.
Not sturgeon, still excellent
6 entries in this index are not sturgeon at all: Ikura (Salmon Roe), Rainbow Trout Roe, Whitefish Roe (Golden), Kalix Löjrom (Vendace Roe), Bowfin / Choupique ('Cajun Caviar'), Lumpfish Roe. These are roes, not caviar in the strict sense, and they are priced accordingly — but Kalix löjrom carries a protected designation of origin, and salmon and trout roe do things on the plate that sturgeon caviar cannot. Judge them on their own terms rather than as substitutes.
Common questions
What is the best type of caviar?
For flavour complexity, ossetra. For the largest grain and softest break, beluga or kaluga. For value in a real sturgeon caviar, farmed siberian (baerii) or kaluga hybrid. "Best" is mostly a question of grain size preference and budget.
What is the difference between beluga and ossetra?
Beluga has the largest, softest grain and a delicate, buttery, low-salt profile. Ossetra has a medium grain and a much more distinctive nutty, marine flavour with colours ranging to amber and gold. Beluga costs more because the fish takes 15–20 years to mature.
Is kaluga the same as beluga?
They are different species in the same genus — Huso dauricus and Huso huso. Kaluga gives a comparably large grain with a firmer pop and a more umami-driven finish, at a substantially lower price.
Which caviar is cheapest?
Farmed siberian sturgeon (baerii) is the least expensive true sturgeon caviar. Below that you are into non-sturgeon roes — trout, whitefish, lumpfish — which are a different product rather than a cheaper version of the same one.
Last reviewed 2026-08-13 · Roemance editorial