Portuguese Seafood Rice (Arroz de Marisco)

Portuguese seafood rice, or arroz de marisco, is a brothy coastal-style dish of rice simmered with tomato, aromatics, and a mix of shellfish and fish. It is served straight from the pot while the rice is tender and the broth is still loose; the exact seafood and seasoning vary from cook to cook and region to region.

Ingredients

1 ½ cups (300 g) short-grain rice, such as carolino rice if available
2 tablespoons (30 ml) olive oil
1 medium yellow onion, finely chopped, about 1 cup (150 g)
1 small red bell pepper, finely chopped, about ¾ cup (100 g)
3 garlic cloves, minced, about 1 tablespoon (9 g)
1 bay leaf
½ teaspoon (1 g) sweet paprika
½ teaspoon (2.5 g) fine salt, plus more to taste
¼ teaspoon (0.5 g) freshly ground black pepper
1 cup (240 g) crushed tomatoes, canned or fresh
½ cup (120 ml) dry white wine, or additional seafood stock
4 ½ cups (1.07 L) unsalted seafood stock or fish stock, warmed
8 ounces (225 g) firm white fish, such as cod or hake, cut into 1-inch (2.5 cm) pieces
8 ounces (225 g) peeled and deveined large shrimp, thawed if frozen
12 small clams, about 8 ounces (225 g), scrubbed and rinsed
12 mussels, about 8 ounces (225 g), debearded and scrubbed
2 tablespoons (8 g) chopped fresh cilantro or flat-leaf parsley
1 lemon, cut into wedges, for serving

Instructions

Prepare the seafood and ingredients. If using live clams, discard any with cracked shells or shells that remain open after a gentle tap. Scrub the clams and mussels under cold running water, pull off mussel beards, and keep them chilled while you cook. Pat the fish and shrimp dry. Chop the onion, pepper, garlic, and herbs, and warm the stock in a saucepan or microwave so it is ready to add. These tasks take about 25 minutes; keep raw seafood separate from ready-to-eat ingredients.
Soften the aromatics, 7 minutes. Heat the olive oil in a wide, heavy pot or deep sauté pan over medium heat. Add the onion and bell pepper and cook for about 6 minutes, stirring occasionally, until softened but not browned. Stir in the garlic and bay leaf and cook for 30 seconds, just until fragrant. If the garlic begins to darken, lower the heat so it does not turn bitter.
Build the tomato base, 5 minutes. Stir in the paprika, salt, pepper, and crushed tomatoes. Cook for 5 minutes, stirring once or twice, until the tomatoes lose their raw, watery appearance. Pour in the wine and simmer for about 1 minute to cook off its sharp aroma. If you do not want to use wine, use the same amount of stock instead; the result will be a little less rounded but still savory.
Toast and simmer the rice, 17 minutes. Add the rice and stir for 2 minutes so the grains are coated with the tomato mixture. Pour in the warm stock and bring it to a steady boil. Stir once to loosen any rice on the bottom, then reduce the heat to maintain a lively, gentle simmer. Cook uncovered for 15 minutes, stirring once or twice to prevent sticking. The rice should be partway tender, with plenty of liquid still visible. If the pot looks nearly dry before the seafood goes in, add ½ cup (120 ml) hot stock or water.
Cook the shellfish, 4 minutes. Nestle the clams and mussels into the rice and cover the pot. Simmer for 4 minutes, keeping the heat high enough to produce steam but low enough that the bottom does not scorch. Avoid stirring vigorously, which can break the fish and damage the rice grains.
Add the fish and shrimp, then finish, 4 minutes. Uncover the pot and arrange the fish and shrimp among the shellfish. Cover again and cook for about 4 minutes, until the shrimp are opaque and curled, the fish flakes easily, and the clam and mussel shells have opened. Check the thickest piece of fish with a food thermometer: USDA FSIS lists 145°F (63°C) as the safe minimum internal temperature. Discard any clams or mussels that remain closed after cooking. If the seafood needs another minute, keep the pot covered and check again rather than boiling it hard.
Rest and serve, 3 minutes. Turn off the heat and let the pot stand, covered, for 3 minutes. Taste the broth and adjust the salt only after tasting, since shellfish and stock can contribute plenty of salt. Sprinkle with cilantro or parsley and serve at once with lemon wedges. The finished rice should be moist and spoonable, not a dry pilaf; stir gently from the bottom when serving so each bowl gets rice, broth, and a variety of seafood.

Tips

Choose the right rice. Portuguese carolino rice is a traditional option, but it can be difficult to find outside Portugal. Short-grain rice is a practical substitute because it releases starch and gives the broth a pleasantly full texture. Arborio also works, though it may make the liquid creamier; avoid rinsing the rice, which washes away surface starch.
Use good stock, but keep it unsalted. A mild seafood or fish stock makes the broth taste deeper, while a light vegetable stock is a workable substitute. If using boxed stock or clam juice, check the label and reduce the added salt at first. You can always season at the end, but an overly salty broth is difficult to correct.
Keep the simmer gentle and the pot wide. A broad pan gives the rice and shellfish room to cook evenly. A hard boil can make the rice stick before it is tender and can toughen shrimp and fish. If your pot is narrow, stir carefully a little more often and add hot liquid if the rice absorbs it too quickly.
Buy and handle shellfish carefully. Keep raw seafood cold until it goes into the pot, and do not use shellfish with broken shells or unpleasant odors. Open shells are a useful doneness cue, but not a reason to keep questionable seafood. Wash hands, utensils, and surfaces after they touch raw seafood.

Serving Suggestions

Serve this rice as the main course in warm, shallow bowls, with enough broth in each serving to spoon up alongside the grains. Put lemon wedges on the table so everyone can add acidity to taste. A simple green salad dressed with olive oil and vinegar makes a crisp contrast to the rich, savory broth. Crusty bread is also useful for soaking up the last of the liquid, though it is not necessary if the bowls are generously filled.

Because the pot contains several kinds of seafood, it makes a satisfying meal without many side dishes. If you are serving guests, set out small plates or a bowl for discarded shells and provide seafood forks or picks if the clams are large. Bring the pot to the table soon after its short rest: as it sits, the rice continues to absorb broth, so the texture gradually becomes thicker. A final sprinkle of herbs just before serving keeps the flavor fresh.

Variations

The seafood can be adjusted to suit availability. Replace the fish with an equal amount of firm monkfish, haddock, or another mild white fish, or use extra shrimp and mussels if that is what you have. Scallops can be added with the shrimp, but use similarly sized pieces and check them promptly because they cook quickly. If fresh live shellfish are unavailable, use cooked, shelled clams or mussels and stir them in during the final 2 minutes just to heat through; they will not add the same briny flavor or visual presentation as shell-on shellfish.

For a version without wine, simply use stock in its place. Add a pinch of hot paprika or a small chopped chili with the garlic if you like gentle heat, but keep the amount modest so it does not mask the seafood. You can also add a handful of peas during the last few minutes for color, although they are not essential to the dish. For a simpler weeknight pot, make the recipe with only shrimp and fish, increasing their combined amount to about 1 pound (450 g) and cooking until done.

There is no single fixed seafood combination for arroz de marisco. Local catches, family preferences, and the type of rice available all influence the pot. Keep the basic method—the aromatic tomato base, rice simmered in seasoned stock, and seafood added near the end—and adjust the specific shellfish or fish without crowding the pan. If the seafood mix is especially salty or strongly flavored, use unsalted stock and season the rice carefully at the finish.

Storage and Reheating

For food safety, refrigerate leftovers within 2 hours of cooking, transferring them to a shallow, covered container so they cool promptly. Cooked seafood rice keeps for 3 to 4 days in the refrigerator. Because the rice absorbs broth as it rests, leftovers will be thicker than the freshly cooked dish. For the best texture, store any extra stock separately if you have some, or plan to loosen the rice with a little water when reheating.

Reheat only the portion you intend to eat, either in a saucepan over medium-low heat or in a microwave-safe covered dish. Add 1 to 2 tablespoons (15 to 30 ml) of water or stock per serving, stir gently, and heat until steaming throughout, stirring once or twice. USDA FSIS recommends reheating leftovers to 165°F (74°C); check the center with a food thermometer. Avoid repeated cooling and reheating, which can dry out the seafood and rice. Freezing is possible in an airtight container for up to 2 months, although the rice may soften and the seafood texture may become less tender after thawing.

Frequently Asked Questions

Can I make Portuguese seafood rice with frozen seafood?
Yes. Thaw the seafood in the refrigerator, drain it well, and pat it dry before cooking. Excess water can dilute the tomato broth and cool the pot, making the cooking time less predictable. If your seafood mix includes pre-cooked shrimp or mussels, add those only at the end to warm through; raw fish and shellfish need enough time to cook fully.

Why is my seafood rice too dry?
Rice continues to absorb liquid while it simmers and while it stands, and different rice varieties take up different amounts. Add hot stock or water in small amounts if the pot looks dry before the seafood is cooked. The finished dish is meant to be looser than a pilaf. If it thickens while you set the table, stir in a splash of hot liquid before serving.

Can I prepare the dish ahead?
You can chop the vegetables, measure the rice, and clean the shellfish several hours ahead; keep raw shellfish refrigerated and covered. For the best texture, cook the rice and seafood just before serving rather than fully cooking the pot in advance. Reheated rice tends to be softer, and the seafood can become overcooked if it is warmed for too long.

What can I use instead of carolino rice?
Short-grain rice is the easiest substitute and produces a similar spoonable, slightly thick broth. Arborio is another option, but it releases more starch and can give the pot a creamier, almost risotto-like texture. Long-grain rice can be used in a pinch, though the broth will be less cohesive; start checking it early because cooking times differ by variety.

How do I know when the clams and mussels are safe to eat?
Cook them until their shells open, and discard any that remain closed after cooking. Their shells do not provide a thermometer reading, so buy them from a reliable source and handle them safely before cooking. For the fish, use a food thermometer to check that the thickest portion reaches 145°F (63°C); shrimp should be opaque and firm.

Can I make this without shellfish?
Yes. Use about 1 pound (450 g) of firm fish and shrimp in total, or substitute additional fish for the shellfish. Add the pieces near the end as directed and check the fish for 145°F (63°C). Since shellfish contributes a distinct briny note, the finished broth will taste milder; a little extra seafood stock or a small splash of clam juice, if suitable for your guests, can add some of that savory depth.

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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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