Black Cod San Sebastian with Clams, Chorizo & White Beans

This version of Black Cod San Sebastian serves four: roasted sablefish over a tomato-pepper broth with clams, chorizo and white beans. Make the sofrito first, then cook the fish and finish the broth.

Why Black Cod Works in a San Sebastián-Inspired Dish

Sablefish, often sold as black cod, is not true cod. Its naturally rich, tender flesh pairs well with the acidity of tomato, the gentle smokiness of paprika and the briny character of littleneck clams. White beans absorb the broth without competing with the fish. In the Basque region, seafood, beans, peppers and shellfish are familiar building blocks, although there is no single canonical recipe for this precise combination.

Unlike a generic baked black cod dinner, this dish is designed as four composed bowls: a spoonable sofrito-and-clam broth, tender beans and a separate roasted portion of fish placed on top. This keeps the sablefish from breaking apart as the clams open. The result is especially suitable for a weekend dinner or a small dinner party.

Choose the Right Sablefish Cut

For four servings, you need approximately two pounds of boneless fillets before cooking. If fillet portions are unavailable, the current Fresh Black Cod (Sablefish), Headless & Gutted product can be used after proper filleting and pin-bone checks. A headless-and-gutted fish is not equivalent to two pounds of ready-to-cook fillet: skin, backbone and trimming affect yield. Ask the fishmonger about cutting, or allow additional preparation time if you have the tools and experience to fillet it yourself.

Portion the fish into pieces of comparable thickness so they bake at a similar rate. The skin can be left on if desired; it helps the delicate fish hold together during handling. Pat each portion dry before seasoning. Keep the fish refrigerated while preparing the broth. For shopping and species details, use the Sablefish Collection, rather than assuming every listed preparation is interchangeable.

What Kind of Chorizo Should You Use?

This version calls for Spanish-style dry-cured chorizo that is labeled ready to eat. Cut it into small dice so its seasoning spreads through the broth. It contributes paprika, richness and salt; begin with the recipe's amount, then taste the completed broth before adding additional seasoning.

Fresh Mexican-style chorizo or another raw sausage is a different ingredient. It must be cooked thoroughly according to its product directions and will alter both texture and flavor. Do not treat the two as an effortless one-for-one substitution. If you prefer to avoid pork, omit chorizo and increase the smoked paprika slightly to preserve a savory, smoky accent without claiming the result tastes identical.

Buying and Handling Littleneck Clams

Choose live clams from a reputable supplier and keep them under appropriate refrigeration. Before cooking, inspect the shells and discard any that are cracked or do not close when tapped. Rinse and scrub as needed, following the supplier's handling directions. Do not seal live clams in an airtight bag or submerge them in fresh water for extended storage.

Clams can release a little sand even after cleaning, so lift cooked clams from the pan and, if necessary, carefully ladle broth away from any sediment. Discard clams that remain closed after cooking. Use a roomy, covered pot and check frequently once the shells begin to open. The goal is just-opened tender clams, not a prolonged boil.

Build Flavor in the Sofrito

Take the onion and bell pepper stage seriously. Ten minutes of moderate heat gives the vegetables time to soften and become gently sweet without browning hard. Garlic should go in later because minced pieces can turn bitter if they scorch. Tomato paste and paprika benefit from brief contact with the warm oil, but add the chopped tomato promptly to prevent burnt spices.

A good sofrito should look moist, concentrated and spoonable. If it starts sticking before the vegetables soften, add a splash of water and lower the heat. You are building the aromatic base of the entire dish; a harshly browned or scorched sofrito will not be fixed by adding more stock at the end.

Timing the Fish and Broth Together

Start the sofrito before the fish. Once the sauce is ready, bring stock and chorizo to a gentle simmer. Put the fish in its preheated oven while the broth develops. Add clams near the end, followed by cooked beans once the shells open. This staggered approach keeps each ingredient within its ideal cooking window.

Begin checking sablefish early, but never declare it done by time or appearance alone. The USDA-recommended endpoint for finfish is 145°F (63°C) at the thickest part. If the clams finish first, cover the broth and keep it warm briefly while the fish completes cooking, rather than boiling the shellfish repeatedly. Finish with butter off the heat so the sauce remains silky.

Make-Ahead Tips and Common Mistakes

The sofrito can be prepared in advance and refrigerated promptly. Cooked beans can also be prepared earlier or drained from a can. For the best texture, cook clams and fish shortly before eating. Do not store live clams in a prepared sauce to save time. If preparing the meal for guests, wash vegetables, measure spices and portion fish before the cooking sequence begins.

Too salty: the chorizo, clams and stock all add seasoning; choose low-sodium stock and salt at the finish. Too thick: add a small amount of warm stock. Watery broth: simmer the sofrito longer before adding clams rather than overcooking shellfish to reduce liquid. Fish breaking apart: move it once with a large spatula instead of repeatedly turning it in the sauce.

Frequently Asked Questions

Can frozen sablefish be used?

Yes, provided it is a suitable raw cut and has been thawed safely according to its packaging. Plan enough time for refrigerator thawing before cooking.

Can I substitute canned white beans?

Yes. Drain and rinse the beans and add them only long enough to warm through. Cannellini or other mild white beans work well.

What if littleneck clams are unavailable?

Other suitable live small clams may work, but opening time, size and salinity can vary. Confirm their handling requirements and use only safe, reputable shellfish.

Is black cod the same as Atlantic cod?

No. Sablefish is a separate species prized for its rich texture. Atlantic cod is leaner and will not produce the same mouthfeel in this dish.

Ingredients for Four

• Four uncooked sablefish fillet portions, 8 oz each (cut from Fresh Black Cod, Headless & Gutted, if buying a whole dressed fish)
• 1 tbsp olive oil for the fish
• 1½ cups low-sodium chicken or vegetable stock, plus extra if needed
• 1 cup diced dry-cured Spanish chorizo labeled ready to eat
• 20 live littleneck clams, scrubbed under cold running water
• 1 cup cooked, drained white beans
• 2 tbsp unsalted butter
• Black pepper, salt as needed, and chopped parsley

Use ready-to-eat Spanish chorizo for this method. Raw sausage needs its own complete cooking step and is not a direct substitute.

For the Sofrito

• 2 tbsp olive oil
• 1 medium yellow onion, finely chopped
• 1 red bell pepper, finely chopped
• 1 medium tomato, chopped
• 5 garlic cloves, minced
• 2 tsp sweet or smoked paprika
• ¼ tsp cayenne, optional
• 1 tbsp tomato paste

Use the whole sofrito batch below; no separate two-cup measurement is required.

Make the Sofrito

1. Heat 2 tbsp oil in a wide saucepan over medium heat. Cook the onion and pepper for about 10 minutes, stirring, until softened.
2. Add garlic and cook for about 1 minute. Stir in tomato paste, paprika and optional cayenne briefly, keeping the spices from scorching.
3. Add the chopped tomato. Cook gently for 5–8 minutes, stirring, until it softens and the mixture thickens.

Roast the Fish

1. Heat the oven to 400°F (200°C). Thaw fish as directed on its package, pat dry and check for bones.
2. Lightly oil a baking dish with the remaining 1 tbsp oil. Arrange the fillets, skin-side down if skin is present, and season with pepper and a little salt.
3. Bake, beginning temperature checks around 12 minutes. Continue until the thickest part reaches 145°F (63°C). Thick portions may need longer; a fixed seven-minute bake does not establish doneness.

Finish the Clam and Bean Broth

1. Before cooking, discard clams with cracked shells or open shells that do not close when tapped.
2. Add stock and ready-to-eat chorizo to the sofrito. Simmer for about 5 minutes. Add more stock if needed for a spoonable broth.
3. Add the clams, cover and cook until their shells open, checking after about 5 minutes. Discard any that remain closed after cooking.
4. Stir in cooked beans and heat through. Remove from heat and stir in butter. Taste before adding salt because the clams and chorizo contribute seasoning.
5. Divide the broth among four bowls, top with cooked fish and garnish with parsley. Serve promptly with bread if desired.

Fish-temperature and shellfish-handling guidance: FDA seafood preparation guidance. Keep raw seafood separate from ready-to-eat ingredients.

Compare formats in Sablefish (Black Cod). Headless-and-gutted fish needs filleting before this recipe. For a simpler meal, see quick sablefish recipes, or browse the black cod recipe guide.