Shellfish and Potatoes à la Marinière
Peer reviewed by UK recipe editorsAuthored by UK recipe editorsOriginally published 16 Jan 2026
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This shellfish and potatoes à la marinière is a refined yet simple seafood dish that captures the fresh, salty essence of the coast. Featuring a medley of mussels, cockles, and clams, the recipe uses a base of dry white wine and aromatic fennel to create a sophisticated depth of flavour. The addition of tender new potatoes makes it a substantial meal, while the vibrant, blended parsley sauce provides a striking green finish that is naturally lighter than traditional cream-based stews.
As a heart-healthy option, this dish relies on unsaturated fats from olive oil and the natural nutrients found in fresh shellfish. It is an impressive choice for a weekend lunch or a light dinner party, offering a balanced combination of lean protein and complex carbohydrates. Serve this homemade seafood feast in large warmed bowls with a few sprigs of fresh parsley to brighten the table and delight your guests.
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Ingredients for Shellfish and Potatoes à la Marinière
575g small new or baby Yukon Gold potatoes
1 tablespoon kosher salt plus more
2 tablespoons olive oil
1 fennel bulb, trimmed, diced
2 shallots, finely chopped
4 garlic cloves, finely chopped
180ml dry white wine
450g littleneck clams, scrubbed
450g mussels, scrubbed, debearded
450g cockles or small Manila clams, scrubbed
6-8 razor clams, scrubbed (optional)
1 cup (packed) flat-leaf parsley leaves, coarsely chopped, plus whole leaves for garnish
1 1/2 tablespoons unsalted butter
Freshly ground black pepper
How to make Shellfish and Potatoes à la Marinière
Place potatoes in a medium saucepan. Add cold water to cover by 2". Add 1 tablespoon salt. Bring to a boil; reduce heat to low and simmer until potatoes are tender, about 15 minutes. Drain; set aside.
Meanwhile, heat oil in a large pot over medium heat. Add fennel, shallots, and garlic and cook, stirring often, until soft and fragrant, about 5 minutes. Remove pot from heat; add wine. Return pot to heat; increase heat to high, add littleneck clams, cover, and cook for 1 minute. Add mussels, cockles, razor clams (if using), and potatoes. Cover; cook until all shellfish have opened (discard any that do not open), 4-5 minutes longer.
Using a slotted spoon, transfer shellfish and potatoes to a warm bowl and transfer any remaining vegetables from pot to a blender. Pour liquid from pot into blender, leaving any sediment behind. Add 1 cup parsley and butter to blender; purée on high until sauce is bright green and thickened, about 2 minutes. Season to taste with salt and pepper. Pour over shellfish; stir to coat. Garnish with whole parsley leaves.
Disclaimer
While every effort has been made to ensure the information is accurate and up to date, individual needs may vary and dietary requirements can differ based on personal health conditions. Always check food labels and allergen information before preparing or consuming any recipe. If you have specific health concerns, allergies, intolerances, or are following a medically prescribed diet, seek advice from your GP, pharmacist, or a registered dietitian before making significant changes to your diet or lifestyle.
Article history
The information on this page is peer reviewed by qualified clinicians.
16 Jan 2026 | Originally published
Authored by:
UK recipe editors
Peer reviewed by
UK recipe editors

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