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How to Smoke Fish

Updated November 2026 · 9 min read

Smoked fish is one of the fastest, most rewarding things you can make on a smoker. A salmon fillet goes from fridge to table in an afternoon. The secret isn't the smoke. It's the brine and a little patience before the fish ever goes in.

In this guide
  1. Hot smoking vs. cold smoking
  2. The best fish to smoke
  3. Step 1: Brine
  4. Step 2: Form a pellicle
  5. Step 3: Smoke
  6. Best wood for fish
  7. Storing smoked fish
  8. Common mistakes

Hot smoking vs. cold smoking

Hot smokingCold smoking
Smoker temp175–225°FBelow about 90°F
ResultCooked, flaky, ready to eatSilky and raw-textured, like lox
SafetySafe once the fish reaches 145°FFish is never cooked. Needs precise curing and temperature control.
Who it's forEveryone, including beginnersExperienced smokers only

This guide covers hot smoking. Cold-smoked fish never gets hot enough to kill bacteria, and mistakes can cause serious illness (including listeria and botulism). Don't try it without a tested curing recipe and a way to hold the fish below 40°F before and after smoking. Pregnant people, older adults and anyone with a weakened immune system should avoid refrigerated smoked fish unless it's heated to 165°F before eating.

The best fish to smoke

Oily fish smoke best. The fat keeps them moist over a long cook and soaks up smoke flavor. Lean white fish can work, but it dries out fast and needs a shorter, gentler cook.

FishRatingNotes
SalmonExcellentThe classic. Skin-on fillets hold together best. King and sockeye are richest.
Trout (steelhead, rainbow)ExcellentMilder than salmon. Whole butterflied trout smoke beautifully.
MackerelExcellentVery oily and bold. Great for smoked fish dip.
BluefishVery goodStrong-tasting fresh, but smoking mellows it.
Whitefish, sablefish (black cod)Very goodSablefish is buttery and almost impossible to dry out.
Tuna, swordfishGoodMeaty steaks. Pull a little early so they don't dry out.
Cod, tilapia, halibutFairLean. Short smoke at low temp, or use for chowder.

Keep pieces a similar thickness so they finish together. Cut thick center pieces and thin tail pieces apart, or pull the thin ones early.

Step 1: Brine

Brining seasons the fish all the way through, firms the flesh, and helps it hold moisture in the smoker. Pick one method:

Dry brine (simplest, firmer texture)

  • Mix 2 parts brown sugar to 1 part kosher salt (for example, ½ cup brown sugar + ¼ cup kosher salt for about 2 lb of fish). Add black pepper, garlic powder or dill if you like.
  • Pack it over the flesh side, cover, and refrigerate.
  • Time: about 4 hours for fillets ½–1 inch thick, up to 8 hours for thick king salmon.

Wet brine (milder, more even)

  • Dissolve ¼ cup kosher salt and ¼ cup brown sugar per quart of cold water.
  • Fully submerge the fish and refrigerate.
  • Time: 4–8 hours, or overnight for thick fillets.

Either way, rinse the fish well afterward and pat it dry. If you skip rinsing, the outside will be too salty.

Step 2: Form a pellicle

This is the step most beginners skip, and it makes the biggest difference. Set the rinsed fish on a rack, skin side down, and leave it uncovered in the fridge for 1–4 hours (or in front of a fan for about an hour) until the surface feels tacky and slightly shiny.

That sticky layer is the pellicle. Smoke clings to it, it gives the fish a glossy finish, and it helps keep in the white protein (albumin) that otherwise beads up on the surface.

Step 3: Smoke

  1. Start low: bring the smoker to 175–180°F and smoke for the first hour. Starting gently helps keep albumin from pushing out.
  2. Finish warmer: raise to 200–225°F until the thickest part reaches 145°F and flakes easily.
  3. Time: usually 2–4 hours total, depending on thickness. Thin trout can be done in about 90 minutes.
  4. Optional glaze: brush with maple syrup or honey once or twice in the last 30–45 minutes.

Tip: lay fillets skin side down on a lightly oiled rack or a piece of foil cut to size. The skin protects the flesh, and the fillet slides right off the skin when it's done.

Best wood for fish

Fish soaks up smoke quickly, so go mild.

  • Alder: the traditional choice for salmon in the Pacific Northwest. Light and slightly sweet.
  • Apple, cherry: mild and fruity. Cherry gives a lovely color.
  • Oak, pecan: a little more presence. Good for oilier fish like mackerel.
  • Avoid heavy mesquite or a lot of hickory. They overpower fish fast.
Gear I use

Thermapen ONE by ThermoWorks

Fish dries out fast once it passes 145°F. An instant-read Thermapen tells you exactly when to pull it, in about a second.

See it at ThermoWorks

Storing smoked fish

  • Fridge: cool it quickly, wrap tightly, and eat within about 5 days.
  • Freezer: vacuum-seal and freeze for 2–3 months for best quality. Thaw it in the fridge.
  • Leftovers make great smoked fish dip: flake the fish into cream cheese with lemon, dill and a little hot sauce.

Common mistakes

  1. Skipping the pellicle. You get patchy smoke and lots of white albumin.
  2. Starting too hot. High heat squeezes out albumin and dries the edges.
  3. Not rinsing after brining. The fish ends up salty.
  4. Using strong wood. Fish only needs a little smoke.
  5. Cooking past 145°F. Fish goes from moist to dry quickly. Use a thermometer.

Ready to try it? Follow the step-by-step Hot-Smoked Salmon recipe.