Canning salmon is a raw-pack, pressure-only process. Pack cleaned fish into pint or half-pint jars with 1 inch of headspace, add salt if you want it, add no liquid, and process for 100 minutes at the pressure that matches your canner type and altitude. Water-bath canning is not safe for salmon. Instant Pots and other electric multi-cookers are not safe substitutes for a pressure canner.
Done correctly, the jars keep on a pantry shelf, the bones soften the way commercial canned salmon does, and you get ready-to-eat fish for salads, patties, chowder, and pasta. Done incorrectly, low-acid fish can support Clostridium botulinum. The rest of this article is the tested method, the reasons behind the long process time, and the jar issues that look alarming but usually are not.
Why salmon cannot go in a boiling-water canner
Salmon is a low-acid food. Botulism spores survive ordinary boiling temperatures (212°F / 100°C). A pressure canner raises the temperature to about 240–250°F, which is what destroys those spores in dense fish. That is why fish processing times are among the longest in home canning: heat has to reach the center of tightly packed flesh and stay there long enough.
Three rules follow from that science:
- Use a stovetop pressure canner large enough for the job, not a pressure saucepan and not an electric multi-cooker with a “canning” button. National guidance is explicit on the last point.
- Do not shorten the 100-minute process, even if the fish looks cooked earlier.
- If pressure drops below the target during the run, bring the canner back up and restart the timer.
If you only have a water-bath canner, freeze the salmon instead.
What you need before you start
Equipment
- Pressure canner with a rack (dial-gauge or weighted-gauge)
- Pint and/or half-pint mason jars made for canning, two-piece lids
- Jar lifter, funnel, clean towels
- Paper towels and white vinegar for wiping oily rims
- Timer you will actually write times on (100 minutes is easy to lose track of)
Have the dial gauge checked if you have not done that recently. Many county Extension offices will test gauges.
Fish
Plan on roughly ¾ to 1 pound of prepared salmon per pint, or half that per half-pint. Sockeye, coho, king, pink, and chum all can with the same schedule. Trout and steelhead use the same fish directions. Tuna does not; it has its own process.
Use fish that was bled and gutted promptly and kept cold. Official guidance is to eviscerate within 2 hours of catch and keep the cleaned fish on ice until packing. Frozen salmon is acceptable if you thaw it in the refrigerator and can it as soon as it is thawed. Do not can fish that sat warm, smells off, or has been thawed on the counter.
Preparing the salmon
- Remove the head, tail, fins, and scales. Wash away blood and slime. A splash of vinegar in the rinse water helps with slime.
- Split the fish lengthwise if that makes packing easier.
- Cut pieces about 3½ inches long so they stand in a pint jar with room for 1 inch of headspace.
- Leave the skin on if you want. After processing it is edible, and packing skin-side-to-glass looks tidy.
- Leave the bones in on salmon. The long process softens them the same way commercial cans do, and they add calcium. Remove only large, obvious backbone sections if you prefer a boneless pack; small pin bones can stay.
Optional brine (Ball and several Extension sources): soak pieces 1 hour in the refrigerator in 1 cup canning or pickling salt dissolved in 1 gallon of water, then drain about 10 minutes. Brining firms the flesh and seasons it. It is flavor, not a safety step. If you brine, you can skip extra salt in the jar.
Do not taste lightly smoked fish that has not yet been canned. That product is still raw from a safety standpoint.
Packing jars (raw pack, no liquid)
Use clean pint or half-pint jars. Wide-mouth pints are easier to pack and empty.
- Pack pieces in firmly, skin next to the glass if the skin is on.
- Leave 1 inch of headspace.
- Add 1 teaspoon canning salt per pint (½ teaspoon per half-pint) if you did not brine and you want seasoning. Salt is optional.
- Do not add water, broth, or tomato sauce. Salmon releases its own juices and oil during the long process.
- Remove obvious air pockets.
- Wipe the rim with a vinegar-dampened towel. Fish oil on the sealing surface is a common reason lids fail.
- Apply lids fingertip-tight.
Jar size matters
The nationally published USDA/NCHFP fish procedure is written for pint jars, 100 minutes. Multiple Extension and Ball sources process half-pints for the same 100 minutes. That is the size range most home canners should use.
Quart jars are a special case. The main NCHFP fish page does not give a quart schedule. Some state Extension publications do, with a much longer time (often 160 minutes). If you want quarts, use a current, named Extension publication written for quarts—not a guess and not a doubled pint time of your own. When in doubt, stay with pints.
Processing times and pressures
Vent the canner 10 minutes with a full stream of steam before you put the weight on or close the petcock. Trapped air keeps the temperature below what the gauge implies.
Process raw-pack salmon as follows. Time stays 100 minutes; only pressure changes with altitude and gauge type.
Dial-gauge canner — pints or half-pints, 100 minutes
| Altitude | Pressure |
|---|---|
| 0–2,000 ft | 11 lb |
| 2,001–4,000 ft | 12 lb |
| 4,001–6,000 ft | 13 lb |
| 6,001–8,000 ft | 14 lb |
Weighted-gauge canner — pints or half-pints, 100 minutes
| Altitude | Pressure |
|---|---|
| 0–1,000 ft | 10 lb |
| Above 1,000 ft | 15 lb |
After processing:
- Turn off the heat and let pressure return to zero on its own. Do not run water over the canner or jiggle the weight off early.
- Wait 5 minutes after zero pressure, then open the lid away from you.
- Leave jars in the canner another 5–10 minutes if the contents are still boiling hard. That reduces siphoning.
- Cool jars 12–24 hours. Remove rings, check seals, wash jars, and label with the date and “salmon, pressure, 100 min.”
Unsealed jars go in the refrigerator and should be eaten within a few days, or you can freeze the contents.
Canning smoked salmon is not the same recipe
Lightly smoked salmon can be canned, but it is a separate tested process:
- Pint jars (half-pints may be processed the same length of time; quality can suffer).
- 110 minutes, not 100, at the same altitude pressures used for raw fish.
- Use a 16- to 22-quart pressure canner. Do not use a small pressure saucepan.
- Put 4 quarts of cool tap water in the canner. Do not reduce that amount or preheat the water.
- Do not use quart jars.
- Safe times have not been determined for other smoked seafoods; freeze those instead.
Smoke the fish by a tested smoking method first. Then can it. Do not invent a “15 minutes at 15 psi” shortcut because the fish is already smoked. Smoking is flavor. Pressure and time are what make the jar shelf-stable.
What the finished jars should look like
New canners often think something went wrong. These are normal:
- Liquid in the jar even though you added none. That is fish juice and oil.
- White curd on the surface or in the liquid. That is coagulated protein (albumin), the same thing you see on baked salmon. It is safe.
- Soft bones. They should mash with a fork.
- Oil on the rim or under the ring. Wipe jars before storage.
- Glass-like crystals (struvite, magnesium ammonium phosphate). They show up in canned salmon sometimes, look like glass shards, and usually dissolve when heated. They are not glass and are safe to eat. Vinegar will dissolve struvite; glass will not.
Signs that are not normal: a bulging lid, leaking seal, spurting liquid when opened, gas bubbles that keep forming, or a rotten or strangely sour smell. Do not taste those jars. Discard them in a way pets and children cannot reach, following Extension guidance for suspect low-acid canned food.
Storage and shelf life
Store sealed jars in a cool, dark, dry place. Quality is best within a year. A jar that was processed correctly, stayed sealed, and shows no spoilage can remain safe longer than that; flavor and texture fade first. Avoid hot garages and spots that freeze and thaw.
Once opened, treat it like any cooked fish: refrigerate in a clean container and use within 3–4 days.
Extra safety when you open a jar
If you did not personally run a tested process—or you inherited jars and cannot confirm time, pressure, and altitude—heat the fish before eating. Extension sources recommend boiling home-canned fish about 10 minutes (some say 15) as a backup against undetected toxin. Toxin is destroyed by a full boil; spores are the reason you pressure-canned in the first place. If the opened jar smells bad or looks foamy, throw it out without tasting.
How to use home-canned salmon
Use it anywhere you would use a commercial can, with richer flavor and softer bones you can mash in:
- Salmon salad or sandwich spread with celery, onion, lemon, and mayonnaise
- Patties or cakes bound with egg and crumbs
- Chowder, pasta, fried rice, or grain bowls
- Quick lunch on crackers with mustard or hot sauce
Drain or keep the juices depending on the dish. The liquid is worth using in chowder.
Mistakes that cause failed seals or unsafe jars
Unsafe
- Water-bath or oven “canning”
- Electric multi-cooker processing
- Quart jars without a tested quart schedule
- Shortening the 100 minutes
- Adding large amounts of untested extras (thick sauces, lots of oil, cheese, raw vegetables packed in volume) that change how heat moves through the jar
- Canning fish that was not kept cold
Quality and seal problems
- Oily rims not wiped with vinegar
- Rings cranked down with full strength (air cannot vent; lids buckle)
- Opening the canner before pressure is fully down (siphoning and seal failure)
- Overpacking so there is no headspace
About oil, lemon, garlic, and peppers
The USDA/NCHFP base recipe is fish plus optional salt. That is the conservative default. Alaska Cooperative Extension field-tested small, measured additions in half-pint jars or half-pound cans—things like ½ teaspoon to 2 tablespoons of oil, a small garlic clove, dill, or a few jalapeño slices—and published which combinations people liked. Those are specific, limited amounts from an Extension test, not an invitation to fill jars with marinade. Salmon is already fatty; extra oil is more useful on lean fish such as halibut. If you add anything, keep it to a tested list and tiny quantities so you do not change heat penetration.
Do not add liquid smoke in the jar. Testers reported off flavor and a black deposit.
Frequently asked questions
Can I can salmon in a water-bath canner if I add vinegar or lemon juice? No. Acidifying a jar of fish at home is not a tested substitute for pressure canning.
Can I use store fillets instead of a whole fish? Yes. Cut to jar length, pack the same way, same time and pressure. Quality is better if the fish was never abused by warm storage.
Do I have to remove the skin? No. Skin-on is standard. Pack skin toward the glass for appearance, or skin-in if you care more about easy jar washing later.
Why is fish 100 minutes when chicken is shorter? Fish is packed densely, often with skin and bone, and heat moves slowly through it. The schedule is built for the coldest spot in the jar, not for how done the outside looks.
Can I stack jars in the canner? Only if your canner manual allows a second rack and the weighted or dial system still operates correctly. Follow the canner manufacturer. Do not wedge jars.
Is the white stuff on top spoiled fat? Usually no. It is cooked protein. Smell and seal tell you more than color.
What about pink salmon versus sockeye? Same process. Color and oiliness differ by species. King and sockeye look richer in the jar; pink is milder and often cheaper to put up in quantity.
Canning salmon is not a creative recipe project. It is a short list of tested steps: cold fish, small jars, no extra liquid, a full vent, and an uninterrupted 100 minutes at the right pressure. Follow that list and the jars in the pantry are the same idea as the can from the store—only the fish in them is the one you chose.