This moules-frites recipe is the dish that tastes like a holiday on the North Sea coast. A big pot of mussels cooked in white wine and shallots, a cone of crispy fries, and everyone is happy. The dish is shared by northern France and Belgium, which still argue in a friendly way about who invented it.
I have eaten it several times on my travels: in April 2024 in Bray-Dunes, on the Opal Coast, during a seafood day at La Voile Bleue, and in August 2026 at Le Baratin in Amiens, in full sunshine. Each time the rule was the same: very fresh mussels and fries cooked twice.
Here is the traditional recipe for mussels marinière with twice-cooked fries, the way they do it up north. It is not difficult, you just need to clean the mussels properly and not overcook them.
The recipe
Classic recipeThe traditional recipe for the dish, not the one from the restaurant where I tasted it.
Ingredients
Mussels marinière
- 2 kg rope-grown mussels
- 3 shallots
- 1 garlic clove
- 40 g butter
- 200 ml dry white wine
- 2 sprigs thyme
- 1 bay leaf
- 1 small bunch flat-leaf parsley (20 g)
- Freshly ground black pepper
Fries
- 1.2 kg floury potatoes (such as Bintje or Maris Piper)
- 2 l frying oil (or beef dripping)
- Fine salt
Method
- Peel the potatoes and cut them into sticks 1 cm thick. Rinse them in cold water to remove the starch, then dry them very carefully in a clean tea towel.
- Clean the mussels under cold running water: pull off the beards and scrape the shells if needed. Throw away any that are broken or that stay open when tapped.
- Heat the oil to 150 °C. Give the fries a first cook in 2 or 3 batches for 6 to 7 minutes, without letting them colour: they should be soft in the middle. Drain on kitchen paper and let them rest.
- Meanwhile, peel and finely chop the shallots and garlic. Chop the parsley.
- In a large pot, melt the butter over medium heat and gently cook the shallots and garlic for 3 minutes without colouring. Pour in the white wine, add the thyme and bay leaf and bring to the boil for 1 minute.
- Add the mussels, cover and cook over high heat for 5 to 6 minutes, shaking the pot 2 or 3 times. The mussels are ready as soon as they open. Throw away any that stay closed.
- While the mussels cook, raise the oil to 180 °C and fry the fries again for 2 to 3 minutes, until golden and crisp. Drain and salt them straight away.
- Sprinkle the mussels with parsley, add a grind of pepper and serve them in the pot with their juices, with the fries on the side.
Tips and variations
- Allow about 500 g of mussels per person for a main course.
- For creamy mussels, stir 100 ml of crème fraîche into the juices at the end and let it bubble for 1 minute.
- The secret of northern French fries is the double frying and very dry potatoes. Beef dripping gives them an even more authentic taste.
- Eat mussels on the day you buy them. Keep them cold in a net bag or a bowl covered with a damp cloth, never in water.
Recipe shared for guidance only, adapt it to your equipment: times and temperatures may vary. Check for allergens (gluten, milk, eggs, fish, shellfish, nuts, sesame…) and make sure ingredients are fresh. Raw or undercooked fish, meat and eggs are not recommended for pregnant women, young children, elderly or vulnerable people. Take care with hot oil, flambéing and alcohol. I am not a health or nutrition professional.