Mackerel

A family of distinct species

“Mackerel” actually refers to many distinct species, each with different culinary characteristics:

• Atlantic mackerel (Scomber scombrus) — most common; Atlantic Northeast US, Europe
• Spanish mackerel (Scomberomorus maculatus) — larger, more delicate
• King mackerel (Scomberomorus cavalla) — large, intense flavor; American South
• Pacific mackerel/blue mackerel — Pacific Ocean; close to Atlantic mackerel
• Cero, sierra, frigate — smaller related species

The species share oily flesh, dark colored meat, and rich savory flavor — but differ in size, fat content, and preferred preparations.

The omega-3 powerhouse

Mackerel is one of the highest-omega-3 fish — typically 2-3g of EPA and DHA omega-3 fatty acids per 100g serving. This is significantly more than salmon, tuna, or most other commonly eaten fish.

Public health authorities consistently recommend mackerel as one of the healthiest seafood choices:

• High in omega-3
• Low in mercury (small species; smaller prey)
• Sustainably abundant (most species)
• Affordable compared to salmon or tuna

The downside: the oily texture is more challenging for many Western palates than mild whitefish.

Asian cooking traditions

Mackerel is central to Japanese, Korean, and other East Asian cuisines:

• Saba shioyaki (Japanese salted-grilled mackerel) — daily breakfast or simple dinner
• Korean godeungeo gui — grilled mackerel, often with spicy sauce
• Saba miso — mackerel simmered in miso-based sauce
• Tsukemono and pickled mackerel — preservation traditions

Japanese sushi includes shime saba (vinegared mackerel) — cured with salt and rice vinegar. The technique transforms the strong-flavored fish into a refined sushi ingredient.

European traditions

In Europe, mackerel has multiple regional traditions:

• Smoked mackerel — UK breakfast, Scandinavian and German tradition
• Mackerel in white wine — French simple preparation
• Pickled mackerel — Dutch herring-style preparation
• Soused mackerel — UK regional pickled preparation
• Greek baked mackerel — with tomato, onion, oregano

Mackerel was historically a poor person’s fish in much of coastal Europe — abundant, cheap, easily preserved. Modern reassessment has elevated mackerel to mid-priced healthy seafood.

A challenge for inland markets

Despite mackerel’s nutritional and culinary virtues, the fish has limited mainstream American appeal because:

• Strong flavor (challenging for whitefish-loving palates)
• Oily texture (some find unpleasant)
• Quick spoilage (must be very fresh or frozen)
• Bones (small bones throughout the fillet)

This is partly why canned mackerel has remained a more popular American option than fresh — the canning process tames the flavor and bones, providing a more accessible product.

Mercury safety

Important distinction for health-conscious eaters:

• Atlantic mackerel and Spanish mackerel are LOW in mercury — safe for regular consumption
• King mackerel is HIGH in mercury — pregnant women and young children should avoid

The FDA specifically lists king mackerel as one of four fish to avoid during pregnancy (along with shark, swordfish, and tilefish). The smaller mackerel species are entirely safe.

When buying, specify the species if possible — generic “mackerel” without specification is usually one of the safer smaller varieties, but it’s worth checking.