Merluza en Salsa Verde (Hake in Parsley and Garlic Green Sauce)

In Basque-style salsa verde, hake is treated gently so the fish stays moist and clean-tasting while the sauce carries the character of the dish. The green sauce is light rather than creamy, made with olive oil, garlic, parsley, white wine and fish stock, then lightly thickened so it clings to the fillets. Fresh clams add a briny depth that makes the dish feel complete without becoming heavy. Served straight from the pan with lemon and black pepper, it is an elegant but practical seafood dinner: fresh, savoury and best cooked at a quiet simmer so the hake flakes softly and the parsley remains bright.
Cuisine style Basque-style Spanish seafood
Flavor profile Herby • Savoury • Light and fresh
Techniques Gentle poaching • Simmering
Key equipment Large frying pan • Whisk
Cooking style One-pot cooking
Time commitment Under 1 hour

Why this recipe works

  • Light but layered flavour: Garlic, parsley, dry white wine and fish stock create a savoury green sauce that supports the hake without overpowering it.
  • Clean, balanced finish: White wine and lemon keep the olive-oil-based sauce bright, while the clams add natural salinity and depth.
  • Gentle poaching: Cooking the hake in a barely simmering sauce helps the lean fillets stay moist, tender and flaky.

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Authenticity notes

  • Basque-style salsa verde: In Spanish seafood cooking, salsa verde usually refers to a parsley-and-garlic sauce, distinct from Mexican tomatillo salsa verde.
  • Clams are a natural addition: Adding clams to hake in green sauce is a common variation that brings briny flavour and turns the dish into a fuller seafood main.
  • A restrained sauce: The sauce should be light and glossy rather than creamy, thickened just enough to coat the fish.

Ingredient notes

  • Check the clams carefully: Use live clams that are tightly closed, discarding any that are cracked or stay open when tapped; after cooking, discard any that remain closed.
  • Choose even fillets: Hake is delicate and lean, so similarly sized pieces help the fish poach evenly.
  • Season at the end: Add lemon after cooking and taste before adjusting the salt, as the stock and clams can already be savoury.

Texture tips

  • Keep the poach gentle: Once the hake goes in, the sauce should barely tremble; boiling can make the fish firm and dry.
  • If the sauce is too loose: Simmer it uncovered briefly before adding the fish, so the fillets are not overcooked while the sauce reduces.
  • If the sauce is too thick: Loosen it with a little fish stock until it lightly coats the spoon.

Ingredient swaps

  • Without wine: Replace the wine with extra fish stock, then use lemon at the end to bring back brightness.
  • Using cod instead: Cod can replace hake; keep the heat gentle and allow a little extra time if the pieces are thicker.
  • Changing the herb: Fresh coriander gives a different, less traditional green sauce while keeping the dish herb-forward.

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Ingredients
Instructions
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  1. Pick the parsley leaves and finely chop them. Finely slice the garlic. Rinse the clams well under cold running water, discarding any that are cracked or stay open when tapped.
  2. Warm the olive oil in a large frying pan over a low heat. Add the garlic and cook for 1 minute until fragrant but not coloured. Stir in the flour and cook for 1 minute to remove the raw taste.
  3. Pour in the wine and whisk until smooth. Add the fish stock, salt and black pepper, then bring to a gentle simmer. Cook for 3 to 4 minutes, stirring, until lightly thickened.
  4. Stir in most of the parsley, reserving a little to finish. Add the clams, cover, and cook over a medium heat for 4 to 6 minutes, shaking the pan occasionally, until the clams open. Lift out the clams with a slotted spoon and keep warm; discard any that remain closed.
  5. Lower the heat so the sauce barely trembles. Nestle the hake into the sauce in a single layer, 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.
  6. Return the clams to the pan to warm through for 1 minute. Squeeze in a little lemon juice to taste and scatter over the reserved parsley. Serve straight away, spooning plenty of green sauce over each portion.

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Recipe notes

Tips

  • Keep the heat gentle once the fish goes in; a quiet poach keeps the hake moist and stops the sauce splitting.
  • If the sauce looks too thick, loosen it with a splash of fish stock; if it looks thin, simmer uncovered for 1 to 2 minutes before adding the fish.
  • Shellfish and fish should be cooked and served hot; if you are pregnant, elderly, or immunocompromised, make sure the clams are fully opened and the fish is piping hot throughout.

Substitutions

  • Replace Dry White Wine with extra Fish stock for an alcohol-free version.
  • Replace Fresh parsley with Fresh coriander for a different but still herb-forward sauce.
  • Replace Hake fillet with Cod fillet, keeping the poaching gentle and adjusting the time if the pieces are thicker.

Storage

  • Refrigerate up to 2 days
  • Cool quickly, then refrigerate in a sealed container. Reheat gently in a covered pan over a low heat with a splash of Fish stock until piping hot; avoid boiling to keep the fish tender. Discard any leftover clams that did not open during cooking.

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Recipe overview

  • Servings: 4 servings
  • Total time: 45min (25min active)
  • Difficulty: Medium
  • Cuisine: Spanish
  • Allergens:
    Fish Gluten Molluscs Wheat
One pot

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