Arctic char is a salmonid fish with delicate pinkish flesh, flavor between trout and salmon, and moderate fat. Recipes should count the plain fish itself, without flour, breading, sweet marinade, glaze, or excess salt.
Arctic char can be wild or farmed, whole or filleted. Good fillet looks moist but not watery, without grey patches or harsh odor.
Nutrition
For keto, Arctic char is convenient: no carbohydrate, complete protein, and usually enough fat for juiciness, though less than the fattiest salmon.
Arctic char has essentially no glycemic load as a plain fish: there is no starch or sugar in the flesh. What changes the keto result is the preparation, especially flour, bread crumbs, sweet marinades, sugary glaze, or ready-made sauces served with the fish.
How to Use
It can be baked skin-on, cooked sous-vide, briefly pan-fried, or served with herb butter. Sweet marinades can easily overpower the delicate flavor.
For Arctic char, weigh the edible part you actually cook or serve: fillet without large bones, trimmed steaks, or the cleaned whole fish portion. Its own fat can carry flavor, but sauces and added fats should still be counted separately when the portion is generous.
How to Choose
When buying Arctic char, look for clean smell, resilient flesh, natural color, and packaging without excess cloudy liquid. Whole fish should have clear eyes and intact skin; fillets should not be dry at the edges or sticky on the surface.
Storage and Safety
Keep Arctic char chilled until cooking and thaw frozen pieces slowly in the refrigerator. Cook fish thoroughly when the source is uncertain, avoid repeated thawing, and treat any strong ammonia smell as a reason to discard the product.
