Salmon is a common food classified as an oily fish with a rich content of protein and omega-3 fatty acids. In Norway – a major producer of farmed and wild salmon – farmed and wild salmon differ only slightly in terms of food quality and safety, with farmed salmon having lower content of environmental contaminants, and wild salmon having higher content of omega-3 fatty acids.
|Nutritional value per 100 g (3.5 oz)|
|Energy||142 kcal (590 kJ)|
|Vitamin A||40 IU|
|Pantothenic acid (B5)|
|†Percentages are roughly approximated using US recommendations for adults. |
Source: USDA Nutrient Database
Salmon flesh is generally orange to red, although there are some examples of white-fleshed wild salmon. The natural color of salmon results from carotenoid pigments, largely astaxanthin and canthaxanthin in the flesh. Wild salmon get these carotenoids from eating krill and other tiny shellfish.
The concentration of carotenoids (mainly canthaxanthin and astaxanthin) exceeds 8 mg/kg of flesh, and all fish producers try to reach a level that represents a value of 16 on the "Roche Colour Card", a colour card used to show how pink the fish will appear at specific doses. This scale is specific for measuring the pink colour due to astaxanthin and is not for the orange hue obtained with canthaxanthin. The development of processing and storage operations, which can be detrimental on canthaxanthin flesh concentration, has led to an increased quantity of pigments added to the diet to compensate for the degrading effects of the processing. In wild fish, carotenoid levels of up to 25 mg are present, but levels of canthaxanthin are, in contrast, minor.
Raw wild salmon is 69% water, 20% protein, 6% fat, and contains no carbohydrates (table). In a 100 gram reference amount, raw salmon supplies 142 calories, and is a rich source (20% or more of the Daily Value, DV) of several B vitamins, especially vitamin B12 at 133% DV, selenium (52% DV), and phosphorus (29% DV). Dietary minerals in moderate content are copper (15% DV) and potassium (10% DV).
Some environmental groups have advocated favoring certain salmon catches over others.
Canned salmon in the U.S. is usually wild from the Pacific Ocean, though some farmed salmon is available in cans. Smoked salmon is another preparation method, and can either be hot- or cold-smoked. Lox can refer either to cold-smoked salmon or to salmon cured in a brine solution (also called gravlax). Traditional canned salmon includes some skin (which is harmless) and bone (which adds calcium). Skinless and boneless canned salmon is also available.
Raw salmon flesh may contain Anisakis nematodes, marine parasites that cause anisakiasis. Before the availability of refrigeration, Japan did not consume raw salmon. Salmon and salmon roe have only recently come into use in making sashimi (raw fish) and sushi, with the introduction of parasite-free Norwegian salmon in the late 1980s.
|Gravlax||Nordic||Raw salmon cured in salt, sugar, and dill. Usually served as an appetiser, sliced thinly and accompanied by hovmästarsås (also known as gravlaxsås), a dill and mustard sauce, either on bread of some kind, or with boiled potatoes.|
|Lohikeitto||Nordic||A creamy salmon soup consisting of salmon fillets, boiled potatoes and leeks, served hot with some dill.|
|Lomi salmon||Polynesian||A side dish consisting of fresh tomato and salmon salad. It was introduced to Hawaiians by early western sailors. It is typically prepared by mixing raw salted, diced salmon with tomatoes, sweet gentle Maui onions (or sometimes green onion), and occasionally flakes of hot red chili pepper, or crushed ice. It is always served cold. Other variations include salmon, diced tomato, diced cucumber, and chopped sweet onion.|
|Lox||European (Ashkenazi) Jewish||A fillet that has been cured. In its most popular form, it is thinly sliced—less than 5 millimetres (0.2 in) in thickness—and, typically (in North America), served on a bagel, often with cream cheese, onion, tomato, cucumber and capers. Lox in small pieces is also often added and cooked into scrambled eggs, sometimes with chopped onion.|
|Rui-be||Japan||Salmon that is frozen outdoors, sliced like sashimi, and served with soy sauce and water peppers.|
|Salmon burger||A type of fishcake made mostly from salmon in the style of a hamburger. It is challenging to make and cook as the salmon requires a binder to make it stick together and is easy to overcook which makes it too dry. Salmon burgers are especially common in Alaska where they are routinely offered as an alternative to beef hamburgers.|
|Salmon tartare||Appetiser prepared with fresh raw salmon and seasonings, commonly spread on a cracker or artisan style bread|
|Smoked salmon||A preparation of salmon, typically a fillet that has been cured and then hot or cold smoked. Due to its moderately high price, smoked salmon is considered a delicacy. Although the term lox is sometimes applied to smoked salmon, they are different products.|
|Salmon sashimi||Japan||Sliced raw salmon served with garnishes. Usually eaten by dipping in soy sauce and wasabi.|
|Salmon sushi||Norway||Sliced raw salmon rolled with rice and sometimes nori (seaweed) as makizushi or placed on top of rice as nigiri sushi, served with garnishes. Usually eaten by dipping in soy sauce and wasabi.|
|Kippered salmon||Hupa, Karuk, Yurok||Salmon smoked using fruitwood until cooked on the outside but raw on the inside, then canned and pressure cooked. Can be seasoned with red pepper and other seasonings.|
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