How to Smoke Mackerel

4.73 from 36 votes
4.73 from 36 votes

Barbecue smoked mackerel cooked low and slow over oak wood. Rich in flavor and matched with an easy dry brine, this is as good as smoked fish comes. Find out everything you need to know with our hot smoked mackerel recipe.

homemade barbecue smoked mackerel recipe

Smoked mackerel is unlike any other type of fish. Unlike white fish such as haddock or smoked tilapia, it’s an oily fish that is packed full of moisture and flavor. This makes it perfect for hot smoking. Best of all, it’s easy to do at home.

In our simple recipe, we prepare the fish in a dry brine consisting of just salt, before smoking each mackerel fillet for a couple of hours over low heat.

You can season the fillets with black pepper and mustard, or just leave them alone! The fish oil does wonders at locking in moisture and natural smokey flavors from your grill’s coals, and is a cut above any store-bought mackerel.

Mackerel is easily one of the best fish to smoke, and this simple recipe is proof of just why. From preparing the dry brine to getting the best wood, discover how to smoke mackerel today.

smoked mackerel cut into small fillet piece resting on chopping board

How to Fillet Mackerel for Smoking

Filleting a mackerel makes it easier to smoke as it creates an even surface for the fish to cook. Luckily, mackerel is one of the easiest fish to prepare, even for novices. As long as you have a sharp filleting knife and follow these instructions, your fish will be ready in no time.

Lay the fish on the table with its body parallel to the edge. Place your knife behind the pectoral fin (that’s the fin closest to the head) and angle your knife at a 45-degree angle towards the back of the fish. Once your knife hits bone, level it out and cut parallel towards the tail. Flip the fish over and repeat on the other side. This should separate the head and the spine from the flesh.

Then, take each fillet and place it skin-side down. Cut around the visible rib cage and throw the bones away. If you want, you can flip the fillets over and remove the skins, but mackerel skin is fairly thin and picks up plenty of flavor in the smoker.

Finally, remove the blood line: the thick, dark red vein running down the center of each fillet. Make a shallow cut on each side of the vein and pull it out. Your mackerel is now ready to smoke.

How to Brine Mackerel Fillets for Smoking

Once you separate the mackerel fillets, you should brine them before smoking. Brining mackerel creates more flavor and keeps the fish nice and juicy as it cooks. 

First, gather your ingredients. You’ll want plenty of cold water, heaping amounts of salt, and seasonings. The choice of seasonings depends on your personal preferences. Choose herbs and spices that hold up well to soaking in water, such as juniper berries, bay leaves, or mustard seeds.

Grab a big pot and fill it with enough cold water to cover the mackerel. Then, throw in a raw, unpeeled potato. You don’t need to cook the potato; you just need it in the brine to tell you when the solution is salty enough. Add salt until the potato floats—you want the brine to be as salty as the sea. 

Finally, your brine is ready for your mackerel fillets. Make sure that the fillets are clean and rinse them under cold water to get rid of any blood or guts. Soak them for at least thirty minutes before smoking.

beau tiful orange colored mackerel piece on fork

Cold Smoking vs. Hot Smoking

Once you have your smoker ready, you can make cold or hot smoked mackerel. But what’s the difference?

Hot smoked mackerel is cooked in a slightly heated smoker. The result is a juicy, tender fish that is ready to eat in a few minutes. Hot smoked mackerel is ready to serve immediately.

Cold smoking pumps smoke but no extra temperature into the smoker. Cold smoking fish takes longer, up to 2 days, and the fish is still raw afterward. It’s a great way to preserve fish to use later, but you have to cure it beforehand. Cold smoking mackerel is far more complicated.

backyard smoked mackerel in grill abskets over low heat charcoal
homemade barbecue smoked mackerel recipe

Smoked Mackerel

4.73 from 36 votes
Barbecue smoked mackerel cooked low and slow over oak wood. Rich in flavor and matched with an easy dry brine, this is as good as smoked fish comes.
Print Recipe Pin Recipe
Prep Time1 hour
Cook Time2 hours
Total Time3 hours
Servings: 6


  • Oak wood chips
  • Water Pan


  • 6 mackerel gutted and cleaned
  • ½ cup kosher salt


  • Apply the kosher salt to the mackerel, sprinkling it on both sides of each fillet. Leave fish to dry brine for 45-60 minutes.
  • Rinse mackerel with tap water and pat dry with paper towels. Place on a cooling rack to dry completely.
  • Heat up smoker or charcoal grill to 275°F (135°C). If you are using a charcoal grill, set up for indirect grilling with your coals placed up at one end of the grill chamber.
  • When your smoker is at cooking temperature, place mackerel on grates and cook for two hours. The fish will be done when it has developed a golden brown color and flakes when touched with a fork.
  • Remove from smoker or grill. Either carve into smaller pieces or enjoy whole.

About the Author

Ben Isham-Smith

A BBQ obsessive, Ben is behind 250+ of The Online Grill’s recipes, as well as countless barbecue guides to help barbecue newbies get to grips with the world’s best form of cooking.

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