No US agency has defined “sushi-grade.” The FDA and USDA both leave the term alone, so it works as a seller-assigned label that a fishmonger, a grocery counter or an online shop can put on any fillet they consider fit for raw eating.
When the label means anything, it usually points to parasite-destroying freezing and a controlled cold chain. Sellers mostly apply it to fillets bought for sashimi and home sushi.
The closest thing to a standard is section 3-402.11 of the FDA Food Code (2026 edition), which governs fish sold raw in restaurants and retail. It requires 168 hours at -4F (-20C), or a shorter hold at -31F (-35C), and exempts pellet-fed farmed salmon.
What does sushi-grade salmon mean?
Whatever the seller says it means. No FDA or USDA definition sits behind the label, so what it covers depends on who is selling the fish.
America’s Test Kitchen points out that fish has no grading system comparable to beef, and the label does not mean the fillet was tested or came from a special source. In practice it is a promise from the fishmonger, and it is only as good as the fishmonger.
The FDA does publish parasite destruction rules, in section 3-402.11 of the Food Code, written for restaurants and retailers that serve raw fish. They control how the fish is frozen and say nothing about what a package may be called.
Shops print sushi grade, sashimi grade or for raw consumption on the pack, depending on the shop, and none of those is stricter in law. Sashimi grade only sounds stricter, because sliced raw fish served as sashimi puts texture and flavor on full display with no rice to hide behind.
How a fillet looks and smells says something about freshness and quality. It says nothing about whether parasites were destroyed, which is the part of the label that matters for safety.
Which parasites can raw salmon carry?
Anisakis simplex, a roundworm, and Diphyllobothrium, the broad fish tapeworm, are the ones to know. Freezing destroys both, and tapeworms are the easier of the two to kill, according to FDA seafood hazards guidance.
Anisakis larvae pass from crustaceans to fish, then to people who eat the fish raw or undercooked. The CDC lists abdominal pain, nausea, vomiting, diarrhea and mild fever as anisakiasis symptoms, and some cases need endoscopy or surgery to remove the worm.
The tapeworm Diphyllobothrium nihonkaiense is tied to raw wild Pacific salmon, including chum, pink and cherry salmon. In Japan, D. nihonkaiense caused 825 of 958 tapeworm cases (86.1%) analyzed from 2001 to 2016, according to a study in the CDC journal Emerging Infectious Diseases (2018).
Anisakis is also the only fish parasite linked to allergic reactions, and EFSA (2010) rates the allergy risk higher with live larvae than with dead ones.
Trimming and candling won’t clear a fillet either. FDA guidance says they lower the worm count, and that’s all. In a 1989 Journal of Wildlife Diseases study of wild Puget Sound salmon, 87% of the Anisakis larvae recovered sat in the edible muscle.
Anisakis also turns up in other raw fish and squid, so the wider question of whether sushi carries parasites is not salmon-specific.
What freezing requirements make salmon safe to eat raw?
The US and the EU split on how long the slow freezing route has to run: 7 days at -20C under the FDA Food Code, 24 hours at the same temperature in Europe. Both allow a fast route at -35C, and the Food Code adds a combined route that EU rules lack.
| Rule | Freezing temperature | Minimum hold |
|---|---|---|
| FDA Food Code, route 1 | -20C (-4F) or below | 168 hours (7 days) |
| FDA Food Code, route 2 | -35C (-31F) or below, until solid | 15 hours at -35C |
| FDA Food Code, route 3 | -35C (-31F) until solid, then -20C | 24 hours at -20C |
| EU Regulation 853/2004, route 1 | -20C or below | 24 hours |
| EU Regulation 853/2004, route 2 | -35C or below | 15 hours |
A fillet that meets one rule can fall short of the other. The rule that applies is the one where the fish is sold.
FDA Food Code methods
Section 3-402.11 sets out the routes in the table above. FDA’s summary of changes in the 2026 edition lists no change to this section. The FDA’s hazards guidance describes them as conditions the Food Code recommends to retailers who provide fish intended for raw consumption.
Effectiveness depends on freezing temperature, hold time, fat content and parasite type. The FDA also notes the conditions may not suit particularly large fish.
On paperwork, section 3-402.12 requires freezing records at the establishment, kept 90 days beyond service or sale. A supplier letter can replace those records if it names the species, freezing temperature, time and a contact person. Farm-raised fish need a supplier statement about rearing and feed instead.
Beaver Street Fisheries put this into practice in a January 2018 customer letter. All its imported raw fish fillets are frozen at -31F (-35C) or below until solid, then stored at -4F (-20C) or below.
Some retail guides pair -4F with a 15-hour hold. No Food Code route and no EU rule contains that pair, so a fillet held 15 hours at -4F has not met either standard.
EU rule for fish eaten raw
Regulation (EC) No 853/2004, as amended by Regulation (EU) No 1276/2011, requires a freezing treatment for finfish and cephalopod products intended to be eaten raw. As of October 2026, the UK Food Standards Agency applies the same two routes under assimilated law.
Freezing has to reach all parts of the fillet, and it can happen at any point in the supply chain before the sale to the final consumer. Businesses selling onward need a document stating the freezing treatment given, though sales to the final consumer need none.
Do farmed and wild salmon need the same treatment?
No. The Food Code exempts pellet-fed farmed salmon from freezing, and wild salmon needs parasite destruction before raw service. EU and UK rules allow an unfrozen raw product only from farms or fishing grounds that meet set exemption conditions.
In a 1989 Puget Sound study, all 50 wild sockeye carried Anisakis simplex larvae, while none of 237 pen-reared Atlantic, coho and chinook salmon did (Deardorff and Kent, Journal of Wildlife Diseases).
University of Stirling researchers working for Food Standards Scotland examined 720 farmed salmon from 12 sites, found no anisakid larvae in the flesh, and judged the risk likely minimal.
To qualify for the Food Code exemption, the fish has to be raised in net-pens or in land-based ponds or tanks and fed formulated feed, such as pellets, with no live parasites infective to the fish. A supplier statement on how it was raised and fed has to back that up.
Vendors disagree on whether farmed salmon needs freezing to be called sushi-grade. Nordic Catch, for one, sells flash-frozen farmed Atlantic salmon portions as sashimi grade and also lists a fresh, never-frozen farmed Icelandic salmon as sushi-grade. The Food Code does not require freezing for pellet-fed farmed salmon, though plenty of suppliers freeze farmed fish anyway for shipping and as an added margin.
Farmed, pellet-fed salmon
It qualifies for the Food Code freezing exemption, and EFSA (2010) rated the Anisakis risk negligible for Atlantic salmon reared in floating cages or onshore tanks on compound feed.
The weak link is that the exemption rests on a supplier’s word about feed and rearing. The evidence is also strongest for Atlantic salmon, since EFSA (2010) found enough monitoring data only for that species, and EFSA’s 2024 update added several other farmed species but called the surveillance data limited. And the exemption covers parasites only.
Wild salmon
Freezing is verifiable here, since a supplier letter lists species, temperature and time, and a correctly frozen fillet also covers the Pacific tapeworm risk.
EFSA’s November 2024 re-evaluation concluded that all wild-caught fish species may be exposed to and infected with zoonotic parasites. Pacific salmon adds tapeworm risk on top of Anisakis, and the Food Code offers no exemption, so unfrozen wild salmon cannot be served raw.
Atlantic salmon (Salmo salar) is the main farmed species. Chinook (king) salmon is sold both farmed and wild, so the rule follows the source, not the species. Sockeye (Oncorhynchus nerka) comes wild-caught and follows the freezing rule.
A Maine smoked-salmon producer showed both routes in a 2018 parasite destruction letter. Its farmed Atlantic salmon, fed parasite-free pellets, relied on the exemption, while its wild sockeye was blast frozen under the Food Code.
For a buyer the test comes down to documented rearing or documented freezing, and one of the two has to exist.
How is sushi-grade salmon handled from catch to counter?
The handling follows a fixed order, from the boat to the thawing tray.
- Chilling starts at harvest. Alaska Gold Seafood describes bleeding and gutting soon after catch, then icing. FDA warning letters repeat guidance that chilling should begin on the harvest vessel, and letters from 2019 to 2024 cite a cooler limit of 40F (4.4C) or below. Much of that guidance targets histamine-forming fish such as tuna, but FDA applies the same 40F ceiling to seafood intended to be eaten raw.
- Freezing happens under a HACCP plan. The seafood HACCP regulation (21 CFR Part 123) requires a hazard analysis and a written plan with critical limits and monitoring. For parasites, FDA’s hazards guidance says to identify the freezing step as the critical control point.
- The cold chain has to hold. FDA’s January 2026 warning letter to South Bay Cold Storage & Handling says processors must confirm that incoming seafood stayed at or below 40F during transit.
- Thawing is controlled. Food Code section 3-501.13 allows refrigerated thawing at 41F (5C) or less, or full submersion under running water at 70F (21C) or below. Room-temperature thawing is not on the list.
Regular salmon only gets the freezing step if the seller chose it. The Food Code requires parasite destruction for fish sold raw or undercooked in ready-to-eat form, so a fillet sold for cooking can skip it.
How to check if salmon is sushi-grade before buying
Ask the seller before anything else, and treat a vague answer as a no.
- Was this fillet frozen for parasite destruction, and at what temperature and for how long?
- Can you show the supplier letter, or the farm-raised statement?
Seller answers beat packaging. FDA’s consumer guidance gives the same rule of thumb. If you eat raw fish anyway, pick fish that was previously frozen.
At the counter, fresh fish should sit refrigerated or on a thick bed of fresh ice that is not melting, and it should smell fresh and mild, not fishy, sour or ammonia-like. Frozen packs should be intact, not open, torn or crushed, with flesh that is hard and never bendable. Frost or ice crystals on a pack can mean long storage or thawing and refreezing.
Labels are a different matter. Most of the ones on a salmon package say nothing about raw safety.
| Label | What it tells you | What it leaves out |
|---|---|---|
| Sushi-grade | Seller considers it fit for raw use | Which freezing rule, if any |
| Previously frozen | Fish went through a freezer | Temperature and hold time |
| ASC or MSC logo | Farming or fishing practice | Parasite and bacterial safety |
| Seafood Watch rating | Environmental sustainability | Raw safety |
The Aquaculture Stewardship Council has said its program is environmental and social, not a food safety or product quality certification (reported by Undercurrent News). Monterey Bay Aquarium’s Seafood Watch rates environmental sustainability, so a green rating says nothing about parasites or Listeria.
A counter that can name its supplier and show the paperwork is the better bet.
When is sushi-grade salmon still not safe enough?
Bacteria are one case, because the freezing step targets parasites. High-risk eaters are another, and so is a fillet frozen in a home freezer. In all of those the label and the freezing step do not make raw salmon safe.
Bacteria that freezing does not remove
Listeria monocytogenes survives freezing, according to a 2019 FDA safety alert, and unlike many bacteria it can keep growing at refrigerator temperatures. FDA’s consumer guidance makes the same point. Freezing does not kill all harmful germs, which is why cooking is the safest route.
The alert named Topway Enterprises Inc., which shipped raw tuna and salmon for sushi to restaurants in Texas and Louisiana. Of the 53 environmental samples collected at its plant in February 2019, 31 were positive for non-pathogenic Listeria species. A state follow-up inspection in June found Listeria monocytogenes in four environmental samples.
Symptoms can take up to 70 days to show after exposure, per the same alert.
A frozen, documented fillet settles the parasite question and leaves the bacteria question open. Plant sanitation and cold-chain control answer that one.
Who should skip raw salmon
- Pregnant women are 10 times more likely than the general population to contract Listeria infection (CDC Vital Signs, 2013), and FoodSafety.gov tells them to cook seafood to 145F (63C) because raw seafood can carry parasites and Listeria.
- Adults 65 and older are four times more likely than the general population to contract it (CDC, 2013).
- FDA lists children among the groups that should avoid raw or undercooked fish, and that covers young kids too.
- For people with weakened immune systems, cancer treatment, AIDS, diabetes, kidney disease and transplant drugs all raise the risk, per the CDC.
Parents sorting out whether kids can eat sushi should keep raw salmon off a young child’s plate.
Why home freezing falls short
Freezing a supermarket fillet at home does not reproduce the supplier process.
- A typical home freezer is set to 0F (-18C). That is warmer than the -4F (-20C) line of the slowest Food Code route and far warmer than -35C.
- A fillet frozen at home has no supplier letter or freezing record, so nothing proves it stayed cold enough for long enough.
- University of Arkansas Cooperative Extension advises using commercially frozen fish for raw dishes such as sashimi, sushi and ceviche.
- Wisconsin’s agriculture department (2022) names fish as a known source of Clostridium botulinum, which can produce toxin without oxygen. A frozen vacuum-packed fillet labeled keep frozen should come out of its bag before it thaws, and Clemson Cooperative Extension warns against thawing it in the package on a countertop.
If the salmon was not commercially frozen for raw use, cook it.
Sushi-Grade Salmon FAQ
Is fresh, never-frozen salmon ever sushi-grade?
Sometimes, but only farmed salmon raised on pellet feed with no live parasites. Never-frozen wild salmon cannot be served raw under the Food Code, whatever the counter label says.
Can you eat grocery store salmon raw?
Not by default. The Food Code freezing rule applies to fish sold raw or undercooked in ready-to-eat form, so a fillet sold for cooking carries no raw-use guarantee.
Eat it raw only when the seller confirms parasite destruction freezing or farm-raised status.
Does washing or curing make raw salmon safe?
No. Rinsing cannot reach larvae sitting in the muscle, and raw-marinated fish still falls under the Food Code freezing rule.
The EU rule also covers salted or marinated fish unless the treatment kills the parasite.
Why does sushi-grade salmon cost more?
The Sushi FAQ attributes the premium to stricter sourcing and handling by the seller. Since the label is unregulated, price alone does not prove blast freezing, a cold chain or paperwork exist, so ask for them.
Is smoked salmon the same as sushi-grade salmon?
Not really. Cold-smoked salmon is a processed product, and the UK Food Standards Agency’s 2009 enforcement letter treated cold-smoked farmed salmon as not raw for EU freezing purposes. That letter predates the 2011 amendment. Current FSA guidance lists cold-smoked fish that does not reach a core temperature of 60C among the products that must be frozen, unless an exemption such as the one for farmed Atlantic salmon applies.
It carries its own Listeria risk, which is why FoodSafety.gov tells pregnant women not to eat refrigerated smoked seafood unless it is in a cooked dish that reaches 165F (74C).
Deciding Whether a Fillet Is Safe to Eat Raw
Sushi-grade salmon earns trust through paperwork, not packaging. A fillet qualifies for raw eating when a freezing record or a pellet-fed farm statement exists and the eater sits outside a high-risk group.
Check things in this order, because eater status is the one factor no document changes.
- Who is eating it. A high-risk group means cook it.
- Whether the paperwork exists, either a freezing letter or a farm statement.
- How it was handled, meaning an unbroken cold chain and a controlled thaw.
The cost of this rule is choice. Any fillet the seller cannot document gets cooked, however fresh it looks.
As of October 2026, no FDA or USDA definition of the label exists. This advice holds until a regulator writes one or the Food Code revises its freezing routes.
