If rainbow trout has turned up in a recipe or caught your eye at the store, here's what you need to use it with confidence and how to choose it, cook it, store it, what to substitute, and 13 recipes to try it in.

What is rainbow trout?

Rainbow trout is a freshwater fish in the salmon family, named for the pink-purple stripe running down its silver flanks. Most of what you buy is farm-raised, sold whole at about 8 to 12 ounces (225 to 340 g) or as boneless butterflied fillets.

The flesh is delicate and faintly sweet, paler and softer than salmon. It cooks fast and forgives the cook who has never tackled a whole fish, which is a large part of its appeal.

Cooking With Rainbow Trout

Trout is thin, so it cooks in minutes. A fillet pan-fries in 3 to 4 minutes total, skin-side down first; a whole fish bakes or grills in about 12 to 15 minutes at 400°F (200°C). It is done when the flesh turns opaque and flakes at the thickest point.

The skin is an asset. Dry it well, lay it into a hot pan with a little oil, and press the fillet flat for a few seconds so it stays in contact. You get a crisp, edible skin that holds the soft flesh together.

A whole trout takes beautifully to gentle, classic treatments. Baked Trout with Fennel and Trout Baked in Wine both roast the fish with aromatics, while Rainbow Trout with Green Onion - Ginger Mayonnaise leans Asian.

For a fast weeknight version, Quick & Easy Rainbow Trout - Breaded gives it a crisp crust in a skillet.

Pairing and Common Mistakes

Trout has a clean flavor that pairs with bright, acidic, herbal partners. Lemon, capers, almonds, dill, fennel, and white wine are the classics, and a little smoke or bacon (as in the Welsh dish Brithyll a Chig Moch) plays off its sweetness.

The most common mistake is overcooking. Because the fillets are so thin, they go from juicy to dry and chalky in under a minute, so pull the fish while the very center still looks barely translucent; carryover heat finishes it.

The second is crowding the pan. A wet, cold fillet dropped into a cool, packed skillet steams and sticks instead of searing. Cook in batches and start with a hot pan.

Substitutes

Other trout species swap in directly. Brook and brown trout cook the same way, and steelhead (a sea-run rainbow) runs pinker and richer. Arctic char is the closest match of all, with a similar size and delicate texture.

Small salmon fillets work but are oilier and stronger, so lighten the seasoning. For a leaner, firmer white-fish swap, branzino or small whole snapper roast well whole.

Avoid thick, dense fillets like halibut or cod here. They need different timing and lose trout's tender quality.

Buying and Storing Rainbow Trout

Fresh trout should smell clean and lake-like, never fishy or sour. Whole fish should have clear, slightly bulging eyes, red gills, and firm flesh that springs back. Fillets should look moist and translucent rather than dull or dried at the edges.

Trout is highly perishable. Keep it on ice or in the coldest part of the fridge and cook it within 1 to 2 days of buying. If you need longer, freeze it well-wrapped for up to 3 months, though the texture softens slightly on thawing.

Store it away from strong-smelling foods, since the delicate flesh picks up odors easily. Rinse and pat it bone-dry just before cooking, which also helps the skin crisp.

Quick facts

In Chinese

虹鳟鱼

British (UK) term

Rainbow trout

en français

truite arc-en-ciel

en español

trucha arcoiris

Recipes using rainbow trout

There are 13 recipes that contain this ingredient.

All 13 recipes