Merluza a la Vasca (Basque-Style Hake with Parsley Sauce)

In Basque-style hake, the fish is treated gently so its mild, sweet flesh stays tender and the sauce remains light. Merluza a la Vasca is typically served in a pale parsley-flecked sauce made with garlic, white wine and fish stock, thickened just enough to cling rather than turn heavy. Here, asparagus adds freshness and clams bring a clean briny depth, making the dish feel generous without losing its delicacy. It is best served straight from the pan with lemon at the table, allowing the herbal sauce, flaky hake and shellfish juices to come together while everything is hot.
Cuisine style Basque seafood cooking
Cooking style One-pot cooking
Time commitment Under 1 hour

Why this recipe works

  • Gentle flavour base: Garlic, parsley, white wine and fish stock create a savoury sauce that supports the hake without overwhelming it.
  • Classic poaching method: Low, steady poaching keeps the hake tender while allowing the sauce to lightly coat the fish.
  • Fresh finish: Lemon and parsley lift the briny clams and delicate fish, keeping the dish bright rather than heavy.

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Authenticity notes

  • Basque-style sauce: The parsley, garlic and white wine sauce reflects the clean, seafood-focused style associated with Basque hake dishes.
  • Clams and asparagus: Clams add briny depth, while asparagus brings a seasonal green note; both are common partners for this style of hake.

Ingredient notes

  • Choosing the hake: Use firm, fresh-looking hake fillets that can hold their shape during gentle poaching.
  • Checking clams: Use only live clams: discard any that are cracked or remain open when tapped before cooking, and any that stay closed afterwards.
  • Use fresh parsley: Fresh flat-leaf parsley gives the sauce its clean herbal flavour; dried parsley will not give the same brightness.

Common mistakes

  • Cooking too hard: Avoid boiling once the hake is added. A gentle simmer helps keep the fish tender and the sauce smooth.
  • Overcooking the fish: Hake is ready when opaque and just flaking; leaving it longer can make the fillets dry and fragile.
  • Adding clams too early: Add the clams near the end so they open in the sauce without becoming tough.

Timing notes

  • Serve straight away: This dish is at its best as soon as the hake is cooked and the clams have opened, while the sauce is glossy and fresh.
  • Prep before heating: Slice the garlic, chop the parsley, trim the asparagus and check the clams before starting, as the cooking moves quickly once the sauce is underway.

Equipment you'll need

Ingredients
Instructions
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  1. Finely slice the garlic and roughly chop the parsley. Trim the woody ends from the asparagus, then cut into 4 to 5 cm lengths. Rinse the clams well under cold running water and discard any that are cracked or stay open when tapped.
  2. Warm the olive oil in a large frying pan over a low to medium heat. Add the garlic and cook for 1 to 2 minutes until fragrant but not coloured. Stir in most of the parsley, reserving a small handful to finish.
  3. Pour in the white wine and let it bubble for 2 minutes. Add the fish stock and bring to a gentle simmer. Whisk the cornflour with 2 tbsp of the hot liquid in a small bowl, then whisk it back into the pan.
  4. Add the asparagus and simmer for 3 to 4 minutes until just tender. Nestle in the hake, season with the fine sea salt and black pepper, then cover and poach gently for 6 to 8 minutes until the fish is opaque and flakes easily. Spoon the sauce over the fish once or twice as it cooks.
  5. Add the clams, cover again, and cook for 4 to 6 minutes, shaking the pan occasionally, until the clams have opened. Discard any that remain closed. Squeeze over a little lemon juice, scatter over the reserved parsley, and serve straight away with extra lemon at the table.

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Recipe notes

Tips

  • Keep the heat gentle once the fish goes in so the hake stays tender and the sauce remains glossy rather than splitting.
  • If you are serving anyone who is pregnant, elderly, or immunocompromised, make sure the hake is fully cooked and the clams are piping hot and all opened before serving.

Substitutions

  • Replace Dry White Wine with an equal amount of Fish stock plus a squeeze of Lemon for a non-alcoholic version.
  • Replace Cornflour with the same amount of Plain flour, whisked into the hot liquid in the same way, for a slightly more opaque sauce.

Storage

  • Refrigerate up to 1 days
  • Best eaten straight away. If you have leftovers, cool quickly and refrigerate; reheat gently in a covered pan over a low heat until piping hot, adding a splash of Fish stock if the sauce has thickened. Discard any leftover clams still in their shells.

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Merluza a la Vasca (Basque-Style Hake with Parsley Sauce)
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Recipe overview

  • Servings: 4 servings
  • Total time: 45min (30min active)
  • Difficulty: Medium
  • Cuisine: Spanish
  • Allergens:
    Molluscs
One pot

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