Did you know? The largest sturgeon ever recorded measured over 7 meters and could weigh more than a ton. Some females must wait nearly twenty years before producing their first eggs, which explains the rarity and value of caviar.
Caviar is one of the most iconic products in gastronomy. Yet behind these delicate grains lies a fish as fascinating as it is ancient: the sturgeon. Having appeared more than 250 million years ago, this ancestral species is the only one to produce true caviar, the diversity of which is often misunderstood.
Which sturgeon species yield the finest caviars? What are the differences between Beluga, Ossetra, and Baeri? Why do people speak of black, golden, or white caviar? And what happens to the sturgeon after the caviar harvest?
Maison Petrossian invites you to discover the secrets of this exceptional product.
Caviar: a fish egg like no other
Caviar consists exclusively of the unfertilized eggs of the sturgeon. Contrary to popular belief, not all fish eggs are caviar. Salmon, trout, or lumpfish eggs are fish eggs, but they can only be called "caviar" when combined with the name of their species.
True fish caviar comes exclusively from fish of the Acipenseridae family, more commonly known as sturgeons.
After being harvested, the eggs are gently sieved, then salted according to the traditional malossol method, which literally means "little salt." This iconic technique involves using just the right amount of salt to reveal the natural aromas of the grains while preserving their texture and finesse.
At Petrossian, this step is followed by a meticulous aging process—the true signature of the House—which allows the caviar to develop its full aromatic richness.
The sturgeon: an exceptional fish
Often described as a "living fossil," the sturgeon has spanned the centuries since the era of the dinosaurs. Some species can live for several decades and only reach maturity after many long years, sometimes nearly twenty years.
This slow growth largely explains the rarity of sturgeon caviar.
Today, almost all caviar sold in the world comes from aquaculture farms. Commercial fishing of wild sturgeons is now very strictly regulated to preserve populations that have long been threatened by overexploitation.
Contrary to popular belief, geographical origin alone is not enough to determine the quality of a caviar. The sturgeon species, farming conditions, fish maturity, salting quality, and, above all, the aging expertise influence the character of a caviar much more deeply.
How is caviar made?
Before arriving at the finest tables, caviar is the fruit of patient and precise work.
The females are raised for many years until their eggs reach perfect maturity. Once harvested, the grains are carefully separated from their membrane, rinsed, sorted, and then salted according to the malossol method.
Then begins an essential stage: aging. Like a fine wine or a cheese, caviar evolves over time. This maturation allows the grains to develop their texture, balance, and the full complexity of their aromas.
It is notably this mastery of the aging process that has built the reputation of Maison Petrossian for over a century.
Which sturgeon species produce caviar?
There are about twenty sturgeon species worldwide, but only a few are recognized for producing great tasting caviars.
Beluga: embodiment of rarity
Derived from the sturgeon Huso huso, Beluga is the largest of the sturgeons and one of the most prestigious species.
Its particularly slow growth often requires sixteen to twenty years before a first caviar harvest.
Beluga stands out for:
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very generous grains;
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a particularly thin membrane;
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a melt-in-the-mouth texture;
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delicate, buttery flavors with a remarkable length on the palate.
Its exceptional rarity makes it one of the most sought-after expressions of caviar.
Ossetra: finesse and aromatic complexity
Ossetra comes from several closely related species, including Acipenser gueldenstaedtii.
Highly appreciated by connoisseurs, it offers a remarkable balance between elegance and intensity.
Its grains generally feature:
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a medium size;
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a color ranging from charcoal gray to golden brown;
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a firm texture;
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notes of hazelnut, fresh butter, and sometimes light briny nuances.
Its aromatic profile makes it one of the most iconic caviars in gastronomy.
Baeri: freshness and balance
Native to Siberia (Acipenser baerii), Baeri is currently one of the most widely farmed species in Europe, particularly in France.
It appeals through:
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even grains;
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a beautiful freshness;
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slightly mineral notes;
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a particularly elegant briny finish.
Accessible without ever compromising on excellence, Baeri often serves as a magnificent introduction to the world of caviar.
Other sturgeon species
Other species also contribute to the rich heritage of caviar.
The Sevruga (Acipenser stellatus) produces smaller grains with an assertive and briny character.
The Sterlet (Acipenser ruthenus), which is rarer, is notably associated with the famous Almas caviar, renowned for the exceptionally light color of its grains.
Depending on the farms, other species or hybrids may also be raised, each expressing its own taste identity.
Beluga, Ossetra, Baeri: what are the differences?
While they all come from the sturgeon, each caviar possesses its own personality.
| Caviar | Species | Grain size | Aromatic profile |
|---|---|---|---|
| Beluga | Huso huso | Very large | Buttery, delicate, melting |
| Ossetra | Acipenser gueldenstaedtii | Medium | Hazelnut, butter, great complexity |
| Baeri | Acipenser baerii | Medium to small | Fresh, mineral, briny |
Beyond the species, each harvest presents unique nuances related to the maturity of the fish, the aging process, and the expertise of the producer.
Why is caviar not always black?
The term black caviar is widely used, but it does not reflect the full natural diversity of the grains.
The color depends on several factors:
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the sturgeon species;
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the age of the fish;
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the maturity of the eggs;
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their evolution after salting and aging.
The shades can range from pearl gray to charcoal gray, including brown, olive, or bronze.
Black caviar
Black caviar refers to all traditional caviars. In reality, its grains are not always pitch black: they can display a particularly subtle palette of grays and browns.
Golden caviar
Golden caviar is much rarer.
Its amber hue appears naturally in certain sturgeons, notably among some lines of Ossetra or in particularly old fish. These grains are highly sought after for their rarity as much as for their aromatic finesse.
White caviar
White caviar ranks among the rarest products in the world.
It comes from albino sturgeons whose grains present an ivory to very pale golden color. Its production remains extremely confidential, which explains its exceptional character.
What happens to the sturgeon after the caviar?
This question often arises among enthusiasts: what happens to the sturgeon after the caviar harvest?
In fish farms, nothing is left to chance. The harvest takes place when the eggs have reached full maturity, after several years of farming.
The meat of the sturgeon, which is particularly delicate, is then valued as gourmet products: fillets, steaks, smoked sturgeon, rillettes, or culinary preparations.
Other parts of the fish also find their use. The skin can be transformed into leather or used for collagen production, while certain parts are used to prepare broths or other artisanal applications.
This full utilization is part of a responsible approach, demonstrating the respect given to this ancestral fish.
How to choose your caviar?
Choosing a caviar is not about looking for the rarest or the most prestigious, but the one whose aromatic profile matches your desires.
Beluga will appeal to lovers of sweetness and melting textures.
Ossetra will offer a more complex aromatic palette, marked by notes of dried fruit and a beautiful length on the palate.
Baeri will charm with its freshness, balance, and finesse.
Each tasting is a discovery, and the true richness of caviar lies in offering as many personalities as there are sturgeon species.
How to taste caviar?
To fully appreciate a caviar, a few simple steps are enough.
Caviar is tasted chilled, but never iced, so that its aromas can fully express themselves. It is traditionally served with a mother-of-pearl, horn, or wooden spoon, as prolonged contact with certain metals can alter the perception of its flavors.
Enjoyed neat, simply placed on the back of the hand, or accompanied by warm blinis and a touch of crème fraîche, it reveals all the subtlety of its textures and aromas.
Each variety deserves to be tasted on its own to fully appreciate all its nuances.
An exceptional expertise for over a century
Since its creation in 1920, Maison Petrossian has been selecting, aging, and revealing the finest sturgeon caviars.
From Beluga to Ossetra and Baeri, each caviar expresses a unique personality, shaped by its species, its farming, the quality of its grains, and the expertise of those who accompany it until the tasting.
Understanding the differences between sturgeon species, grain colors, or the stages of caviar production allows for a better appreciation of the full richness of this exceptional product, where every tin tells a story of patience, high standards, and passion.