Salmon Brine: Wet vs Dry Brine for Smoking

Wet brine or dry brine for salmon

Most salmon brine guides online cover exactly one method: a wet brine, salt water, maybe some sugar, a few hours in the fridge. That works well, but a dry brine, salt and sugar rubbed straight onto the flesh instead of dissolved in water, is a real alternative that a lot of smokers prefer for a firmer texture and less added moisture, and there is surprisingly little solid guidance online for doing it safely. This page covers both, for salmon specifically, broken down by fillet thickness rather than one blanket number, with a compact calculator below and the FDA's own figures for the smoking step that follows either brine.

A wet brine is the faster, easier-to-control choice: dissolve the salt in water, submerge the fish, and the strength is set the moment you weigh the salt and the water. A dry brine takes longer to get right because the salt has to pull its own moisture out first, but it needs no container and leaves a denser texture some cooks prefer for smoking. Both need the same rest afterward to form the pellicle, and both lead to the same smoking step: hot smoke to 145°F, held for at least 30 minutes.

Brining time and salt by thickness

Time is set by thickness, not weight; salt is set by weight and strength, not thickness. The figures below are for a 2 lb salmon fillet: 114 g of salt (plus equal sugar) in 2 qt of water for the wet column at the default 6% strength, or 27.2 g of salt (plus equal sugar) rubbed on directly for the dry column at this page's 3% default. Use the calculator below for a different weight or strength.

Thickness	Wet brine, 6%	Wet salt (2 lb fillet)	Dry brine	Dry salt (2 lb fillet)
0.5 in	3 h	114 g	2 h	27.2 g
0.75 in	4 h	114 g	3 h	27.2 g
1 in	5.5 h	114 g	4 h	27.2 g
1.25 in	7 h	114 g	5 h	27.2 g
1.5 in	8.5 h	114 g	6 h	27.2 g
2 in	11 h	114 g	8 h	27.2 g

Wet-brine hours follow the same formula as the seafood brine calculator's smoking mode, built from the Pacific Northwest Extension's published brine (roughly 1 hour per inch of thickness at about 15% salt by weight, which works out to about 8 hours per inch at a more usual 5%) and held to a 12-hour ceiling. Dry-brine hours are this page's own house range, since no extension bulletin publishes a fixed time for a quick pre-smoke dry cure; it runs about 4 hours per inch, held between 2 and 10 hours. Salt weights are the makers' own label figures (Diamond Crystal, Morton) and USDA's 6 g per teaspoon for table salt, the same salt table every calculator on this site shares.

Build your salmon brine

Brine type

Wet: 5 to 8% salt to the water's weight, hours by thickness. Dry: 2 to 4% salt of the fish's weight, rubbed on.

Fillet weight

A fillet, steak, or whole side. 0.25 to 10 lb (0.1 to 4.5 kg).

Thickness at the thickest point

Sets the time. 0.25 to 3 in (0.5 to 7.5 cm).

Salt, percent

Wet brines run 5 to 8% of the water's weight; 6% is a reasonable middle setting.

Salt you have

Weigh the salt if you can; the spoons are a check, not the target.

2 lb salmon, 1 in thick, 6% wet brine

114 g Diamond Crystal

about 13 1/2 tbsp

Sugar: 114 g
Water: 2 qt (1.89 L)
Time: 5.5 hours

Dissolve the salt, chill the brine to 40°F or below, then submerge the fillet.

Safety: hot smoke to 145°F (62.8°C) throughout and hold it at least 30 minutes; refrigerate at 40°F or below while raw or brining, colder (36 to 38°F) once it's smoked (FDA Fish and Fishery Products Hazards and Controls Guidance; storage figure from Ohio State and Pacific Northwest Extension).

Open the full seafood brine calculator for cooking brines, gravlax, and trout or shrimp presets.

Wet brine method

Mix and chillDissolve the salt and sugar in the water using the calculator's grams, then chill the brine to 40°F or below before the fish goes in.
SubmergeRefrigerate for the calculated hours, fully submerged, never past this site's 12-hour ceiling for a smoking brine.
Rinse and dryRinse briefly under cold water and pat dry. A wet surface steams instead of taking on smoke.
Rest for the pellicle1 to 3 hours, uncovered, on a rack in the fridge, until the surface is tacky to the touch.
Hot smoke145°F throughout, held at least 30 minutes. Pacific Northwest Extension's home-smoker target is a slightly higher 160°F for the same hold.
Cool and storeRefrigerate at 36 to 38°F and eat within 1 to 2 weeks, or freeze for up to 2 months.

Dry brine method

Weigh the fishSalt at 2 to 4% of the fillet's weight, this page's house range, plus an equal weight of sugar if you want a sweeter cure.
Pack the cureSpread the salt and sugar mix evenly over the flesh side, in an even layer rather than a heavy pile in the center.
Cure, refrigeratedThe calculated hours, roughly 4 per inch of thickness. A much heavier, sugar-forward recipe like Mannkitchen's runs 12 to 36 hours; if you're following a specific published recipe, use its own time rather than this page's.
Wipe and dryWipe off the excess cure rather than rinsing; a dry brine leaves far less surface salt than a soak does. Pat dry.
Rest for the pellicleSame 1 to 3 hours, uncovered, on a rack in the fridge.
Smoke and storeSame 145°F hold and the same cold storage as a wet-brined fillet.

Trout and shrimp

The wet-brine math on this page works for any firm, oily fish, not just salmon. A whole 1 lb trout at 1.5 inches thick in a 6% brine comes out to about 57 g of salt and 8.5 hours, which is the seafood brine calculator's own trout preset, computed the same way as the salmon figures above. Shrimp and other shellfish are a different job: they're thin enough to season through in 15 to 30 minutes at 3.5 to 5%, and they're more often cooked outright than smoked for hours. The seafood brine calculator holds separate presets and time bands for shellfish, cod, and half a dozen other groups; use that page if salmon isn't what's on the cutting board.

Smoking and food safety

This page covers the brine. The calculator above sets the salt, sugar, and time for the brining step only. It does not validate a smoker's time and temperature curve, and it cannot confirm that any particular home cold-smoking setup is safe. Follow your smoker manufacturer's instructions, or a tested recipe from a state extension service, for the smoking step itself, and check doneness with a calibrated thermometer.
Hot smoke to 145°F (62.8°C), held 30 minutes. That is the FDA's own control point for hot-smoked fish, from the Fish and Fishery Products Hazards and Controls Guidance. Pacific Northwest Extension's home-smoking bulletin recommends a slightly higher 160°F target for home equipment, to leave margin for a thermometer that isn't sitting exactly at the thickest point.
Cold-smoking carries real botulism risk. Cold-smoked fish is never cooked, so it depends entirely on salt content, a smoker temperature at or below 90°F, and refrigeration to control Clostridium botulinum, per the same FDA guidance. Even with commercial controls in place, the FDA states that the combination of safeguards present in smoked fish "are not adequate to prevent toxin formation by C. botulinum type A and proteolytic types B and F." A home setup has no reliable way to measure water phase salt in the finished fish, so treat cold-smoking as a process to follow exactly from a tested source, not to improvise from this page.
Refrigerate at 40°F (4°C) or below while the fish is raw or brining; that's the general USDA refrigeration and danger-zone rule. Once the fish is smoked, go colder still: Ohio State and Pacific Northwest Extension both recommend 36 to 38°F, eaten within 1 to 2 weeks or frozen.
Never brine on the counter, and never let raw or brining fish sit between 40°F and 140°F for more than 2 hours.
Discard the brine after one use. It has held raw fish and its strength has already changed.
This isn't commercial food-safety guidance. Anyone producing smoked fish for sale falls under the FDA's HACCP rules for seafood processors, which are stricter and more specific than anything on this page.

What you'll need

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Kitchen scale in grams. A 2 lb fillet's wet and dry salt amounts are almost 90 g apart; the scale is what keeps the brine on target.
Instant-read or leave-in probe thermometer for the 145°F hold in the smoker, checked at the thickest part of the fillet.
Wire rack and sheet pan for the pellicle rest in the fridge, so air reaches the whole surface.
Non-reactive container or zip bag for a wet brine; glass, stainless, or food-grade plastic.
Electric, pellet, or charcoal smoker capable of holding a steady low temperature; follow its own manual for the smoking step.

How this page is checked

This guide was written by Cedrick Reese for BrineCalculators.com. The wet-brine numbers use the same formula as the smoking mode on the seafood brine calculator, so the two pages never disagree; that formula is built from the Pacific Northwest Extension's published home-smoking brine and held to a 12-hour ceiling. The food-safety figures, hot-smoke to 145°F held 30 minutes, the 90°F cold-smoke ceiling, the 3.5% water phase salt target, and the note that smoking alone does not control every strain of Clostridium botulinum, are quoted directly from the FDA's Fish and Fishery Products Hazards and Controls Guidance, chapter 13, fetched from fda.gov for this page rather than taken from a secondary summary. Storage figures for finished smoked fish come from Ohio State University Extension and the Pacific Northwest Extension's home-smoking bulletin; the general 40°F raw-food refrigeration rule is USDA's own. The dry-brine percentage, 2 to 4% of the fish's weight, is disclosed in the text as a house range rather than a government figure, because no FDA guidance or extension bulletin publishes one fixed number for a quick pre-smoke dry cure; it sits between the much lighter rub used in some published recipes and the far heavier ratios used in traditional dry salt-curing for preservation, both cited in the references below.

When one of these sources changes, the figure on this page is checked against it and updated in one place. If anything here disagrees with the current text of the FDA guidance or an extension bulletin linked below, the source wins; use the contact page to report it.

Frequently asked questions

How long do you brine salmon before smoking?

It depends on thickness and brine strength, not weight. In a 6% wet smoking brine, plan on about 5.5 hours per inch of thickness: 3 hours for a half-inch tail piece, 5.5 hours for a 1 inch fillet, 8.5 hours for a 1.5 inch center cut. A weaker 5% brine takes longer, about 8 hours per inch; a stronger 8% brine takes about 3 hours per inch. Every smoking brine on this site is held to a 12-hour ceiling. A dry brine, salt and sugar rubbed straight onto the flesh, works faster because there is no water to dilute it: roughly 4 hours per inch is a reasonable starting point, up to about 10 hours for a thick whole side. After either method, rinse or wipe off, then rest the fish uncovered in the fridge for 1 to 3 hours to form the pellicle before it goes in the smoker.

What is the salt ratio for smoked salmon brine?

For a wet brine, 5 to 8% salt to the water's weight, with 6% as a reasonable middle setting, which works out to 57 g of salt per quart of water. For a dry brine, this page uses a house range of 2 to 4% salt of the fish's own weight; no FDA or extension bulletin publishes one fixed percentage for a quick pre-smoke dry brine, so treat that range the way this site treats its gravlax cure, as a tested starting point rather than a regulatory number. Either way, an equal weight of sugar is standard for a smoking brine and optional if you would rather skip it.

Can you dry brine salmon before smoking?

Yes. Pacific Northwest Extension's home smoking bulletin says dry salting is an acceptable alternative to a wet brine and that the same general rules apply. Salt on the surface draws moisture out, that moisture redissolves the salt, and the concentrated brine gets pulled back into the flesh, the same mechanism as a wet brine, just without added water. Published home recipes for a pre-smoke dry brine vary a lot: a light rub under 1% of the fish's weight with no rest time at all on one end, and a much heavier, sugar-forward cure like Mannkitchen's published recipe (1 part kosher salt to 4 parts brown sugar, cured 12 to 36 hours) on the other. An older Virginia Tech and Oregon State bulletin on traditional dry salt-curing runs saltier again, up to 1 part salt to 3 or even 1 part fish by weight, but that is aimed at shelf-stable salted fish, not a quick smoking prep. This page's calculator uses a lighter 2 to 4% starting point built specifically for fish headed to the smoker.

How long does brined salmon last in the fridge?

Raw fish, brined or not, keeps 1 to 2 days in the refrigerator before it needs to be cooked, the same general rule that applies to any raw seafood. Once it is smoked, it keeps longer: Ohio State University Extension recommends storing smoked fish below 36°F and eating it within 14 days, or freezing it for up to 2 months. Several extension sources put finished smoked fish colder than a typical fridge setting, 36 to 38°F rather than the general 40°F rule for raw food.

Is home-smoked salmon safe?

It can be, if the fish reaches a safe internal temperature and the brine, salt level, and storage all follow a tested process; the risk is real if any of those steps gets skipped. Clostridium botulinum, the bacterium behind botulism, can grow without oxygen in vacuum-packed or tightly wrapped smoked fish held at refrigerator temperature, and it does not reliably announce itself with an off smell or taste. The FDA's own guidance for seafood processors states plainly that the controls present in smoked fish "are not adequate to prevent toxin formation by C. botulinum type A and proteolytic types B and F," which is why strict refrigeration still matters even after the fish is fully cooked. Hot-smoking, where the fish is cooked through to 145°F, is the better-documented and more forgiving method for a home kitchen. Cold-smoking never cooks the fish at all, and it depends on precise salt content and smoker temperature control that most home setups cannot verify. This page and its calculator cover the brining step only, not a validated cold-smoking time and temperature process; follow your smoker manufacturer's instructions or a tested extension recipe for the smoking step itself, and check doneness with a calibrated thermometer rather than a dial.

What temperature do you smoke salmon to?

145°F (62.8°C) throughout the thickest part, held there for at least 30 minutes. That is the FDA's control point for hot-smoked fish, and it matches the general safe minimum cooking temperature for fish on the government's food safety chart. Pacific Northwest Extension's home-smoking bulletin recommends aiming a little higher for home equipment, 160°F held 30 minutes, to leave a margin for a thermometer that is not sitting exactly at the thickest point. Both are well above the 125 to 130°F some recipe sites suggest for a softer texture; that lower range is a flavor preference some cooks accept, not a food-safety figure, and this page does not recommend it.

Do you rinse salmon after brining?

For a wet brine, rinse briefly under cold water and pat dry. For a dry brine, wiping off the excess cure is usually enough, since there is far less surface salt to remove than after a soak. Either way, the fish then needs to air-dry uncovered on a rack in the refrigerator for 1 to 3 hours until the surface turns tacky. That tacky layer is the pellicle, described in an Oregon State and Virginia Tech smoking bulletin as dissolved surface proteins drying onto the fish; smoke sticks to it far better than to a wet surface.

Can you brine frozen salmon?

Thaw it first, in the refrigerator rather than on the counter. Frozen fish takes up a brine unevenly and sheds water as it thaws, which dilutes a wet brine to a strength you cannot predict. The general food-safety rule for any perishable food is that it should not sit between 40 and 140°F for more than 2 hours, so thawing a whole salmon side on the counter is a food-safety problem on top of a brining one.

What's the difference between wet brine and dry brine for salmon?

A wet brine submerges the fillet in salted water; salt and a little moisture move in from every surface at once, and the strength is easy to control because it is set by the water's weight. A dry brine packs salt, usually with sugar, straight onto the flesh; it pulls moisture out first, which redissolves the cure and carries it back in, giving a firmer, denser result with less added moisture than a wet brine. Both need the same pellicle rest afterward and the same 145°F smoking target. Neither one replaces cooking the fish through; a brine, wet or dry, only seasons and firms the flesh before the heat does the food-safety work.

Can you brine trout or shrimp the same way as salmon?

Trout, yes, with the same wet-brine math as salmon. A whole 1 lb trout at 1.5 inches thick in a 6% brine works out to about 57 g of salt and 8.5 hours, which is the seafood brine calculator's own trout preset. Shrimp and other shellfish are a different case: they are thin and delicate, so they take a short cooking brine of 15 to 30 minutes at 3.5 to 5% rather than an hours-long smoking brine, and they are more often cooked outright than smoked. The seafood brine calculator holds separate presets and time bands for shellfish; use that page if you are working with shrimp, scallops, or similar.

References

Disclaimer

The information on this page is for general informational and educational purposes only and is not a substitute for a validated commercial or home-smoking process. Results vary with the fish, the salt, the smoker, and the refrigerator. Always follow FDA and USDA guidance for safe food handling: keep raw and brining fish at 40°F (4°C) or below, hot smoke to at least 145°F (62.8°C) held 30 minutes, and refrigerate finished smoked fish colder still. Cold-smoking carries a documented botulism risk that this page cannot assess for your specific equipment; follow a tested process from a reputable source. BrineCalculators.com makes no warranties regarding the accuracy or suitability of this information and is not responsible for outcomes from its use. See the full disclaimer.

Salmon Brine for Smoking: Wet or Dry, by Thickness