Arroz de Marisco.
Portuguese Soupy Seafood Rice
Arroz de marisco · say it: ah-ROHZ deh mah-REESH-koo
Arroz de marisco is what happens when a country decides rice should be eaten with a spoon. It is deliberately malandrinho — "a bit naughty", the Portuguese word for rice cooked loose and soupy — so the grains sit suspended in an orange, garlicky shellfish broth rather than absorbing it all. Prawns, clams and mussels go in near the end and stay just cooked, tomato and onion melt into the base, and a large handful of fresh coriander plus a hit of piri-piri goes in off the heat. It tastes of the sea, of a slow onion-and-olive-oil base, and of the shrimp shells you were about to throw away. The pot goes straight from stove to table and everyone eats out of it, which is not informality but the whole point: this rice waits for nobody.

- Gate
PortugalEstremadura and the Algarve- Prep
- 30 min
- Cook
- 40 min
- Total time
- 1 hr 10 min
- Serves
- 4
- Status
- Medium
- Nutrition / serving · estimated
- Calories 540 kcal
- Protein 40 g
- Carbs 64 g
- Fat 13 g
- Fiber 3 g
- Sugar 6 g
- Sodium 1300 mg
Why this recipe works.
- Builds a real stock from the prawn heads and shells in fifteen minutes, which is where nearly all the flavour of a good arroz de marisco actually comes from.
- Gives the liquid-to-rice ratio for a properly loose result instead of leaving you with risotto by accident.
- Adds each shellfish at the right moment, so clams open, mussels stay plump and prawns do not turn to rubber.
- Works with whatever the fish counter has — the method is fixed, the shellfish list is not.
Ingredients.
18 itemsFor the stock
For the rice
For the shellfish
To finish
Equipment
- Large heavy pot or Dutch oven with a lid
- Second saucepan for the stock
- Fine sieve
- Ladle
Instructions.
Peel the prawns and build the stock
Peel 600 g of prawns, keeping the heads and shells and refrigerating the peeled tails. Put the heads and shells in a saucepan with the halved onion, bay leaves and water, bring to the boil and press the heads against the side of the pan with a wooden spoon to squeeze out the orange juices.
Tip That pressing step is what turns weak pink water into real stock. Do not skip it.
Simmer and strain
Simmer the stock for 15 minutes, no longer — shells turn bitter with extended boiling. Strain through a fine sieve, pressing the solids firmly, and keep the stock hot on a back burner. You should have around 1.3 litres of deep orange liquid.
Make the refogado
In a wide heavy pot, warm the olive oil and cook the onion, garlic and red pepper over medium-low heat for 10 minutes, until the onion is soft, sweet and just beginning to turn gold. Stir in the tomato paste and cook another minute until it darkens from red to rust.
Cook down the tomato
Add the grated tomatoes and cook for 8–10 minutes over medium heat, stirring now and then, until the mixture pulls away from the base of the pan and you can see olive oil separating and pooling at the edges. That separation is the signal the base is ready.
Toast the rice and add the stock
Pour in the wine and let it bubble away for a minute. Stir in 300 g of rice and turn it in the base for 1 minute until every grain is coated and glossy, then add all the hot stock and the piri-piri, season with salt and bring to a steady simmer.
Simmer the rice loose
Cook uncovered at a lively simmer for 12 minutes, stirring every couple of minutes so nothing catches. The rice should still be surrounded by plenty of visibly loose broth — it will look too wet at this stage, which is correct.
Add the shellfish in order
Tip in the clams and squid, cover, and cook for 3 minutes. Add the mussels and cook covered for 2 minutes more, until the shells have opened. Finally scatter in the peeled prawns, cover and give them 2 minutes — they are done the moment they curl and turn opaque pink.
Tip Discard any clam or mussel that stayed shut after cooking.
Finish off the heat and serve
Pull the pot off the heat, stir in the coriander and taste for salt and heat — the broth should be well seasoned, since the rice mutes it. Let it stand 2 minutes with the lid on, then carry the pot to the table and ladle into deep bowls with bread and lemon.
Tips from our kitchen.
- Buy shell-on prawns with the heads still attached. The heads carry the deepest flavour, and squeezing them into the stock pot is the single biggest upgrade you can make.
- Use a short or medium grain rice — carolino if you can find it, otherwise Italian arborio or Spanish bomba. Long grain basmati stays separate and will not thicken the broth.
- Purge clams in cold salted water for 30 minutes before cooking, changing the water once. Grit in the broth ruins the whole pot and cannot be fixed afterwards.
- The finished rice should ripple when you tilt the pot and pour off a spoon in a loose stream. If it mounds, add more hot stock — it will keep drinking as it sits.
- Coriander goes in off the heat, in quantity. Cooked into the broth it turns dull and grassy; stirred in at the end it is the smell that hits you when the lid comes off.
- Never reheat the seafood with the rice. If you must warm leftovers, lift the shellfish out first, loosen the rice with stock, then return them for the last thirty seconds.
Substitutions.
- Carolino rice → Arborio, carnaroli or bomba
- Any starchy short grain works. Avoid parboiled or long-grain rice, which refuses to release the starch that thickens the broth.
- Fresh clams and mussels → Frozen shell-on mussels, or double the prawns
- Frozen shellfish is already cooked, so add it in the last two minutes purely to heat through. Add a splash of bottled clam juice to the stock to make up for lost flavour.
- Piri-piri → A pinch of chili flakes, or a fresh red chili sliced into the base
- The heat should sit behind the seafood, not in front of it. Portuguese tables usually keep the bottle out so people can push it further themselves.
- Fresh coriander → Flat-leaf parsley
- It is a real change of character rather than a like-for-like swap — the dish becomes northern Portuguese in accent — but it is far better than skipping the herb entirely.
Variations.
- Arroz de tamboril
- The same brothy method built on chunks of monkfish tail instead of mixed shellfish, usually with a few prawns for the stock. Meatier, and a restaurant staple along the whole coast.
- Arroz de lingueirão
- Made with razor clams, common on the Algarve coast where they are dug at low tide. Cook them exactly as long as it takes them to open and no longer.
- Arroz de marisco com sapateira
- A brown crab is boiled, its meat and brown butter stirred through the base, and the shell cracked over the pot. Much richer, and the version worth ordering in a proper marisqueira.
Storage & reheating.
This dish is built to be eaten immediately and does not keep well — the rice keeps drinking the broth in the fridge and the shellfish toughens on reheating. If you have leftovers, refrigerate for a single day, pick the shellfish out before warming the rice with extra hot stock, and stir the seafood back in for the last thirty seconds. Do not freeze it. Any stock you make beyond what the recipe needs freezes perfectly for three months and gives you a head start next time.
Serve with
Crusty bread for the broth, a green salad dressed only with olive oil and vinegar, and a cold bottle of vinho verde.
The story behind Arroz de Marisco.
Portugal is one of the largest rice eaters in Europe, and its rice cookery went in the opposite direction from Spain's. Where paella is dry, flat and crusted at the base, Portuguese rice dishes are wet, deep-potted and stirred. The country grows its own short-grain carolino in the river valleys of the Tejo, Sado and Mondego, a soft, starchy grain that gives up its starch readily and thickens the broth around it — exactly the wrong rice for paella and exactly the right one here. The vocabulary is precise: rice can be seco (dry), malandro (loose) or caldoso (soupy), and arroz de marisco is firmly in the last two.
The dish is most associated with the fishing towns of the Estremadura coast north of Lisbon, and with the Algarve, where the shellfish is whatever came in that morning. That is the honest structure of the recipe: it is a stock and a technique, not a fixed list. Clams, mussels, prawns, crab, spider crab, langoustines, cuttlefish — all appear, in whatever combination the day allows, and a version made with only prawns and clams is not a lesser version. What stays constant is the base of onion, garlic, bay and olive oil cooked down slowly, the tomato, the fresh coriander that southern Portugal uses where the rest of Europe would use parsley, and piri-piri chilies brought back from the old Portuguese routes in Africa.
Eating it is a communal business. The pot lands in the middle of the table, sometimes a heavy clay one, and people ladle from it in rounds because the broth thickens as it sits and the second helping is different from the first. Bread goes round to catch what the spoon misses, and shells pile up in a bowl in the middle. In restaurants it is almost always sold for a minimum of two people, which tells you everything about how it is meant to be served — and why leftovers are not really part of the plan.
Questions, answered.
What does malandrinho mean and how soupy should the rice be?
Malandrinho translates roughly as "a bit naughty" and describes rice cooked loose and wet rather than dry. Tilt the pot and the rice should slide as a ripple, and a spoonful should carry broth with it rather than mounding. If it holds its shape like risotto, you have gone too far and should add more hot stock.
Can I use frozen seafood?
Yes, though the broth will be noticeably shallower because frozen shellfish rarely comes with the heads and shells that make the stock. Compensate by using bottled clam juice or a good fish stock as the base, and add frozen mussels or clams only in the last two minutes since they are usually pre-cooked and will turn rubbery with any longer.
What is the difference between arroz de marisco and paella?
Paella is Valencian, cooked flat and wide in a shallow pan until the rice is dry and a toasted crust called socarrat forms underneath, and it is never stirred. Arroz de marisco is Portuguese, cooked in a deep pot, stirred, and served deliberately soupy so you eat it with a spoon. Different rice, different pan, different texture, different country.
Why did my clams stay closed?
A clam that will not open after cooking was almost certainly already dead before it went in the pot. Check them raw: tap any open clam on the counter and discard it if it does not close. After cooking, throw away the ones that stayed shut rather than prying them open, and never judge freshness by smell alone once they are in a hot broth.
Can I make any of it ahead?
Make the shellfish stock up to two days ahead and refrigerate it, or freeze it for three months — that is the slow part, and having it ready cuts the cooking down to about twenty-five minutes. The rice itself must be cooked to order. There is no way to hold a finished arroz de marisco without the grains swelling and the broth disappearing.
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Recipe by The DishRoute Kitchen · published August 19, 2026 · updated August 19, 2026



