Imperial Caviar — Acipenser Schrenckii × Huso Dauricus — is the fruit of hybridizing our two species from the Amur River: the Amur sturgeon and the Kaluga.

The pearls are medium to large (3.0-3.2 mm), with a distinctive brown-green hue that sets them apart from either parent species — a visual signature unique to this hybrid. The flavor unites the best of both parents: the earthy crispness and mild salinity of the Amur, and the buttery richness and nutty depth of the Kaluga, with light oceanic notes that tie it all together.

It sits squarely in the middle of the Amur River family, both in profile and price — above the Amur in richness and complexity, below the Kaluga in intensity and prestige. For the caviar lover who wants to explore the depth of Kaluga without fully committing to the premium segment, Imperial is the natural bridge — an entry price point with undeniably premium characteristics.

What does it mean that Imperial is a hybrid?

Imperial is produced by crossing two distinct sturgeon species from the same river basin — Acipenser Schrenckii (Amur sturgeon) and Huso Dauricus (Kaluga). The result inherits traits from both: the large pearl size and buttery richness of the Kaluga, and the earthy character of the Amur. Even the color is unique to it — a distinctive brown-green that neither parent produces on its own. Hybrid sturgeon are widely produced and enjoyed for their consistency and vigor — Imperial perfectly exemplifies what that combination can yield.

How does Imperial compare to Amur and Kaluga?

Think of it as a natural progression. Amur is the lightest — crisp, mildly saline, and fresh. Imperial takes that foundation and adds the buttery richness and larger pearl size of Kaluga, creating a more complex and full profile. Kaluga is the pinnacle — the deepest, richest, most prestigious of the three. Imperial sits comfortably in the middle: premium flavor, accessible price, and large pearls with a color found nowhere else in our lineup.