How Caviar Is Graded: The Complete Guide

The beluga colour code 000 indicates light grey eggs. It sounds like a top score. It describes colour, not flavour, size or condition. That distinction runs through caviar grading: an impressive designation tells you little until you know what was assessed.

Producers and traders grade caviar by bead size, colour, firmness, uniformity, flavour and aroma. Their judgement usually places a batch within the supplier’s own system. Formal standards exist, but commercial names rarely reveal which standard, if any, was used.

Who grades caviar, and when?

At the processing stage, experienced staff assess the eggs and decide how to select and handle them. Codex’s fish-processing code includes a specific blending and grading step before packaging, followed by cooling and maturation: the controlled holding period during which salted eggs develop.

The person responsible may be called a grader or master salter. Titles and duties vary. Calvisius describes its master salters as the people caring for its manually processed caviar, a description of the producer’s working practice rather than an independent certification.

A trading house can then make its own selection from supplied batches. Petrossian says its specialists test and grade each batch, assessing texture and flavour among other qualities. The grade on the retail tin can therefore express the house’s judgement rather than the farm’s original classification. For the wider distinction between selection, condition and personal preference, start with caviar grading and quality.

How caviar is graded: the main criteria

A beautiful bead is only the beginning. Graders bring several observations together, looking beyond appearance to texture, flavour and aroma. These checks help you read a supplier’s description and assess what is in your spoon; they do not amount to home certification.

For granular caviar, the beads should be separate and intact. Firmest is not necessarily finest: a tough membrane can be less pleasant than one that yields readily. Nor does visual uniformity rescue an unbalanced flavour.

Explore bead size, colour and firmness for the physical detail, and professional tasting and scoring for structured sensory assessment. A photograph captures appearance; a single measurement captures one characteristic. Neither captures the whole experience.

Formal standards and house grades: different jobs

Codex: an international reference

Codex CXS 291-2010, the Standard for Sturgeon Caviar, covers salted eggs from the sturgeon family, Acipenseridae. Its quality and defect provisions address acceptable product characteristics and defects, including foreign material, objectionable odours and damaged product. These are questions of product quality, distinct from a preference for a particular shade.

Codex does not award a universal commercial rank such as Royal or Reserve. Meeting a product standard and earning a supplier’s highest selection are different achievements. Codex is a reference standard, not automatically binding national law; compliance also does not mean an independent grader has tasted every tin.

Russia: a named grading standard

Unlike Codex, Russia’s GOST 7442-2017 for granular sturgeon caviar defines named grades: Extra, highest and first, with sensory and chemical requirements. It is not a universal Grade 1 and Grade 2 pairing.

Read a GOST designation against that named standard rather than translating it into a foreign house’s hierarchy. The trade conventions behind numbered grades explains the distinctions.

EU, UK and US: no assumed equivalence

A named grading standard is one thing; official equivalence between commercial grades is another. No such equivalence is given in EU, Great Britain, Northern Ireland or US rules. That is a specific point about equivalence, not a claim that no relevant national standard exists.

The FDA’s caviar guidance addresses a different question again: it states that no standard of identity has been established for caviar. Identity concerns what a product is; grading concerns its assessed quality. The FDA statement therefore does not settle whether every possible federal quality standard is absent.

What commercial grade names actually mean

Royal, Imperial and Reserve mean what the business using them specifies. A supplier may set serious internal requirements for each selection, but the name alone reveals neither the criteria nor the thresholds or assessor.

Petrossian offers a useful example. Its grades distinguish batches within a caviar type, and its own specialists assign them. The names have meaning within that stated system; another company’s Royal need not represent an equivalent selection.

Beluga’s familiar colour codes serve a narrower purpose: 000 indicates light grey, 00 medium grey and 0 darker eggs. They identify colour selections, not legal quality grades or guarantees covering size, flavour and condition.

When a name arrives without an explanation, ask for one. Imperial, Royal, Reserve and other trade names separates commercial labels from species names and processing descriptions.

Why two batches receive different grades

Species provides part of the biological starting point; individual fish and egg maturity add variation. Age matters through growth and reproductive development, but older fish do not automatically produce higher grades. There is no dependable conversion from years of age to a house’s selection name.

Firmest is not necessarily finest: a tough membrane can be less pleasant than one that yields readily.

Water quality and feeding can influence off-flavours in farmed sturgeon. The cited research examined fish fillets rather than roe, so its findings do not directly establish an effect on caviar. Purging, also called depuration, involves holding fish in suitable clean water before harvest to reduce off-flavours. It is a management step, not a grade or an automatic assurance of flavour.

Then come salting and maturation. Salt distribution matters. So do handling and holding conditions: together, they shape the finished product the grader evaluates. A grade judges processed eggs, not simply the fish’s species or age.

For a buyer, the useful drivers of value are careful husbandry, controlled processing, appropriate maturation and a selection that matches its description. Large beads or a striking colour may belong in that description. They may not be the qualities you enjoy most.

What a grade cannot tell you

A grade does not establish origin, species authenticity or food safety. Those questions need their own answers.

A CITES label supplies traceability information, not laboratory verification of the contents. Equally, a brand’s headquarters or the place where caviar was repacked does not establish where the roe originated.

Use the caviar label guide to separate these details from the commercial selection name. Species verification, contaminants and microbiological testing belong to quality control and laboratory testing, rather than sensory grading.

How to judge a selection at home

Before opening the tin, ask what the grade means for that batch. Is it a size selection, a colour selection, a sensory selection or a combination? Request the species or documented hybrid, origin, ingredients and handling instructions separately. Do not expect the grade to supply those details.

Assess only caviar that has been handled according to its instructions, remains within its use-by date and gives no reason to suspect a safety problem. A pleasant smell, appealing appearance and intact seal cannot establish safety. If storage is uncertain, do not taste it to find out.

For the quality assessment, take a small sample with a clean spoon and taste it without an accompaniment first. Look at how the beads separate and how much breakage there is. Notice the aroma. Then feel how the membranes yield and consider the salt: does it support the flavour or overwhelm it?

Write down a few observations before looking again at the grade name. When comparing suppliers, choose the same species and a similar processing style, then ask each supplier for its actual specification. That gives you a useful basis for comparison, rather than a contest between impressive names.