Cod à Brás Ingredients for a Classic Portuguese Supper

Cod à Brás is a Portuguese dish often associated with Lisbon, made by folding salt cod, crisp potatoes, and onion with softly set eggs. Olives and parsley add a briny, fresh finish, while the potatoes make it a hearty one-pan meal; family versions vary in how finely they cut the potatoes and how creamy they leave the eggs.

Ingredients

12 oz (340 g) dry salt cod, preferably in thick pieces
About 2 gal (7.6 L) cold water, divided for soaking and poaching
1 lb (450 g) Yukon Gold or russet potatoes
1½ cups (360 ml) neutral oil, such as sunflower or canola oil, for frying
2 tbsp (30 ml) olive oil
1 medium yellow onion, about 8 oz (225 g), thinly sliced
6 large eggs, about 10½ oz (300 g) without shells
¼ tsp ground black pepper, plus more to taste
¼ tsp fine salt, only if needed after tasting
⅓ cup (50 g) pitted black olives, whole or halved
¼ cup (15 g) chopped fresh flat-leaf parsley

Instructions

Desalt the cod. Rinse the salt cod, place it in a large nonreactive bowl, and cover it generously with cold water. Refrigerate for 24 hours, changing the water every 6 to 8 hours. Keep the fish cold throughout; the soaking water draws out salt, so do not leave the bowl on the counter. If the pieces are unusually thick or the package calls for a longer soak, follow that guidance and allow extra time.
Prepare the potatoes and cod. Drain and rinse the soaked cod. Put it in a saucepan and cover with fresh cold water. Bring the water just to a gentle simmer and cook for about 8 to 10 minutes, until the thickest part reaches 145°F (63°C) on a food thermometer, the USDA FSIS safe minimum for fish. Lift the cod onto a plate and let it cool enough to handle. Remove any skin and bones, then flake the fish into bite-size pieces. Peel the potatoes and cut them into thin matchsticks, about ⅛ inch (3 mm) thick. Pat them thoroughly dry with a clean towel so they fry rather than spatter.
Fry the potatoes. Pour the neutral oil into a deep, heavy skillet to make a shallow layer, taking care to leave plenty of room at the top. Heat over medium-high heat. Fry the potatoes in several small batches for about 4 to 6 minutes per batch, turning once or twice, until tender and lightly golden at the edges. The oil should bubble steadily without smoking; lower the heat if it begins to smoke. Transfer each batch to a paper-towel-lined tray and let excess oil drain. Set the potatoes aside and discard or strain the frying oil once it has cooled.
Soften the onion. Wipe out the skillet, then add the olive oil and set it over medium heat. Add the sliced onion and cook for 7 to 9 minutes, stirring often, until soft and translucent but not browned. If the onion starts to catch, lower the heat and add a teaspoon of water. Stir in the flaked cod and black pepper, and cook for about 2 minutes, just long enough to warm the fish through.
Fold in the potatoes and eggs. Add the fried potatoes and gently toss them with the cod and onion so they stay as intact as possible. Beat the eggs in a bowl just until the yolks and whites are combined, then pour them into the skillet. Cook over low heat, folding slowly and continuously, until the egg mixture reaches 160°F (71°C) on a food thermometer, the USDA FSIS safe minimum for egg dishes. It should be moist and softly set, not runny or dry; use low heat because eggs can turn firm quickly. This usually takes about 3 to 5 minutes, though the thermometer reading is the safety check.
Season and finish. Taste a bite before adding salt, since the cod may still be quite savory. Add the salt only if it needs it. Fold in half the parsley, then transfer the mixture to a warm serving platter. Scatter the olives and remaining parsley over the top and serve promptly.

Tips

Check the salt before committing. Salt cod varies by thickness and how it was cured. After soaking, cook a small flake in simmering water and taste it. If it is still unpleasantly salty, continue soaking in fresh refrigerated water, changing it every few hours; the total time will be longer than the recipe’s 24-hour estimate.
Use a convenient potato substitute. Frozen shoestring potatoes can stand in for freshly cut potatoes; cook them according to their package directions until crisp, then fold them in at the same point. They save preparation time but are often saltier and may soften faster. Avoid thick fries, which can overwhelm the delicate egg and cod.
Keep the egg mixture gentle. Low heat and steady folding help the eggs coat the ingredients instead of forming large, dry curds. A wide skillet gives the mixture room to heat evenly. If your pan is crowded, use a larger one or fold in the potatoes in two additions.
Salt at the end. Olives and salt cod both contribute salt, even after soaking. Black pepper and parsley can be added freely, but taste before adding any extra salt.

Serving Suggestions

Serve cod à Brás hot as a main course, straight from a warmed platter. It is substantial on its own, but a crisp green salad dressed with lemon and olive oil gives the meal a fresh contrast. Steamed green beans, lightly dressed lettuce, or sliced tomatoes also work well without competing with the rich eggs and potatoes.

Offer extra parsley and olives at the table, along with lemon wedges if you enjoy a sharper finish. Crusty bread is useful for scooping up any soft egg left on the plate. For a larger Portuguese-inspired meal, keep the sides simple: the salted fish, fried potatoes, and eggs already provide plenty of savory flavor and texture.

Variations

For a less hands-on version, use frozen shoestring potatoes as noted above. Thinly sliced potatoes are traditional in many home preparations, but some cooks prefer a slightly thicker cut that stays more distinct under the eggs. Whatever cut you choose, cook the potatoes until tender and lightly crisp before combining them with the fish.

If salt cod is difficult to find, use fresh or frozen unsalted cod. Poach it gently until it reaches 145°F (63°C), flake it, and season the dish with a little extra salt only after tasting. This is a practical substitute, but it will not have the deep, concentrated savoriness of salted cod. For a different seafood version, cooked haddock can be used in the same amount, though the flavor will be milder.

Some versions use a little garlic or finish with more olives; others leave both out. You can stir a small minced garlic clove into the onions for the final minute of cooking, or add extra parsley for a greener finish. Keep additions modest so the cod and eggs remain the focus. This dish is not usually made creamy with dairy, but a spoonful of water whisked into the eggs can make them easier to fold without changing the flavor much.

Storage and Reheating

For food safety, refrigerate leftovers within 2 hours of cooking in a covered, shallow container. Keep them refrigerated at 40°F (4°C) or below and use within 3 to 4 days. The potatoes will lose their crispness as they sit, and the eggs will firm, so the leftovers will be softer than the freshly made dish. Freezing is possible, but the eggs and potatoes tend to become watery or grainy after thawing, so refrigeration is preferable for this recipe.

Reheat only the portion you plan to eat. Warm it in a covered skillet over low heat with a teaspoon of water, stirring gently until the center reaches 165°F (74°C), the USDA FSIS safe temperature for reheated leftovers. You can also microwave it in short intervals, stirring between each one, until it is steaming throughout and reaches that temperature. Avoid reheating repeatedly, which dries out the eggs and makes the potatoes softer.

Frequently Asked Questions

Do I have to soak salt cod for a full 24 hours?
Most dry salt cod needs a long soak, and 24 hours with several water changes is a useful starting point for pieces of moderate thickness. Very thick pieces or especially salty fish may need longer. Follow the package directions when available, keep the fish refrigerated, and taste a cooked flake before using it.

Can I make cod à Brás with fresh cod?
Yes. Fresh or frozen unsalted cod is a workable substitute: poach it until the center reaches 145°F (63°C), then flake it and continue with the recipe. Because it lacks salt cod’s concentrated flavor, taste the finished mixture before deciding whether it needs salt. It will be a milder version of the Portuguese dish.

How do I stop the eggs from becoming dry?
Cook them over low heat and keep folding gently as they set. Take the skillet off the heat as soon as the mixture reaches 160°F (71°C); the thermometer reading is important for safe egg dishes, and continued cooking after that point can make the texture firmer. Have the potatoes and cod ready before adding the eggs so they do not sit cooking while you prepare other ingredients.

Can I prepare any part of the recipe ahead?
Yes. The salt cod needs its refrigerated 24-hour soak, and you can peel and cut the potatoes shortly before cooking. Keep cut potatoes covered in cold water in the refrigerator for up to a few hours, then drain and dry them very thoroughly before frying. You can also slice the onion and chop the parsley ahead, but fry the potatoes and cook the eggs close to serving time for the best texture.

Why is my finished dish too salty?
The cod may need a longer soak, or the olives may be contributing more salt than expected. Salt-cured fish varies, so taste a cooked flake before combining it with the other ingredients. If the dish is already assembled, serve it with an unsalted salad or bread; avoid adding salty sides or extra salt on top.

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Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes

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