Atlantic Salmon, Skinless Fillet

Atlantic salmon exists as a single species (Salmo salar), but market offerings vary by origin and production method. Norwegian salmon—raised in frigid fjords—tends toward firmer texture and cleaner flavor. Scottish salmon, farmed mainly along the west coast and Hebrides and in Orkney and Shetland, is prized for its rich marbling. Chile is the second-largest producer after Norway, offering consistent quality at accessible prices. Canadian Atlantic salmon from New Brunswick and British Columbia balances quality and sustainability. Wild Atlantic salmon has declined sharply across its range (the IUCN moved it to Near Threatened in 2023) and is fished commercially only in very small quantities; virtually all commercial Atlantic salmon is farm-raised.

Atlantic salmon has shaped human civilization for millennia. Archaeological evidence shows people around the North Atlantic harvesting salmon since the Palaeolithic; a salmon carving in France's Abri du Poisson rock shelter is roughly 25,000 years old. Medieval European monasteries prized salmon as a Lenten staple, and by the 19th and early 20th centuries, pollution, weirs and dams, and overfishing had destroyed wild runs in rivers from the Rhine to the Thames. Modern salmon aquaculture traces its origins to Norway in the late 1960s and early 1970s, when pioneers such as the Grøntvedt brothers first raised salmon successfully in floating sea cages, building on earlier sea farming of rainbow trout in Norway's sheltered fjords. By the 1980s, the industry had spread to Scotland, Chile, and Canada. Today, farmed Atlantic salmon accounts for roughly 70% of global salmon supply—a transformation from rare delicacy to everyday protein in just half a century.

The coral-pink hue of salmon flesh derives from astaxanthin, a carotenoid pigment that wild salmon accumulate from crustacean prey and farmed salmon receive through supplemented feed. Besides coloring the flesh, it helps protect the fish's omega-3 fatty acids from oxidation during storage and cooking. Atlantic salmon's high fat content (roughly 10–18% in farmed fish, depending on feed and season) is mainly monounsaturated and polyunsaturated fatty acids, and the fish is high in the long-chain omega-3 fatty acids EPA and DHA. The protein structure of salmon denatures between 43 and 60 °C; gentle cooking preserves the delicate myosin proteins that create its signature flaky, melt-in-mouth texture. Overcooking causes albumin—the white protein that sometimes beads on the surface—to coagulate excessively, signaling moisture loss.

Farmed Atlantic salmon remains controversial among environmental advocates. Open-net pen aquaculture can release waste, parasites (particularly sea lice), and escaped fish into wild ecosystems, threatening native salmon populations. Look for certifications from the Aquaculture Stewardship Council (ASC) or Best Aquaculture Practices (BAP), which set standards for environmental impact, chemical use, and animal welfare—though critics note these standards have limitations. Emerging land-based recirculating aquaculture systems (RAS) offer a more controlled alternative, eliminating escape risks and reducing effluent discharge. For the most sustainable choice, seek out ASC-certified Norwegian or Scottish salmon, or explore RAS-raised options from domestic producers. Wild Atlantic salmon is protected across much of its range, including under the EU Habitats Directive, and commercial fishing for it is banned or tightly restricted in most countries.