Choucroute de la Mer (Seafood Sauerkraut)

Seafood choucroute takes the familiar Alsatian pairing of wine-scented sauerkraut and aromatics in a lighter, coastal direction. Instead of cured meats, the cabbage is gently simmered with shallot, juniper, bay and dry white wine, then used as a steaming bed for sea bass, mussels and prawns. The result is tangy, savoury and briny without feeling heavy, with the sauerkraut staying bright and the seafood kept just tender. A little butter rounds out the acidity, while lemon adds freshness at the table. It makes a distinctive dinner that feels special but remains practical in one pot.
Cuisine style Alsatian-style French seafood
Cooking style One-pot cooking
Time commitment Under 1 hour

Why this recipe works

  • Aromatic base: Shallot, juniper, peppercorns and bay gently perfume the sauerkraut before the seafood is added.
  • Bright but balanced: Rinsing and squeezing the sauerkraut softens its sharpness, while lemon restores freshness at the end.
  • Gentle one-pot cooking: The seafood steams directly over the sauerkraut, keeping the fish tender and letting the shellfish juices enrich the cabbage.

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Authenticity notes

  • Seafood variation: Choucroute de la Mer is a coastal-style variation of Alsatian choucroute, replacing the usual cured meats with fish and shellfish.
  • Wine-simmered cabbage: Gently simmering sauerkraut with white wine and aromatics gives the dish its recognisable savoury-tangy base.

Ingredient notes

  • Prepare the sauerkraut properly: Rinse and squeeze the sauerkraut well so it stays lively without making the finished dish too sharp or watery.
  • Choose fresh mussels: Use mussels that smell clean and briny, and discard any that are cracked or do not close when tapped before cooking.
  • Use a dry white wine: A dry white wine keeps the cabbage bright and savoury; a sweeter wine will make the dish rounder and less crisp.

Common mistakes

  • Boiling too hard: Keep the sauerkraut at a gentle simmer once the wine is added; a rapid boil can make the cabbage harsh and the seafood tough.
  • Overcooking the seafood: Add the fish, prawns and mussels only at the end, then cook just until the mussels open, the prawns turn pink and the fish flakes easily.
  • Keeping leftovers too long: This dish is best eaten straight away. If storing leftovers, chill them quickly and reheat gently so the seafood does not become rubbery.

Timing notes

  • Serve as soon as the seafood is cooked: The texture is at its best immediately after steaming, while the fish is still moist and the mussels are freshly opened.
  • Best on the day it is made: Because the dish relies on delicate seafood, it is better served fresh rather than made fully in advance.

Equipment you'll need

Ingredients
Instructions
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  1. Thinly slice the shallots. Lightly crush the juniper berries and black peppercorns with the side of a knife to help them release their aroma. Cut the sea bass into large portions and set aside.
  2. Rinse the sauerkraut in a colander under cold water, then squeeze it well so it is damp rather than dripping. This keeps the flavour bright without becoming overly sharp. Set aside.
  3. Melt 40 g of the butter in a large pot over a medium heat. Add the shallots and cook for 3 to 4 minutes until softened but not coloured. Stir in the crushed juniper berries, peppercorns and bay leaves.
  4. Add the sauerkraut and pour in the white wine. Bring to a gentle simmer, then cover and cook over a low heat for 20 minutes so the cabbage perfumes the wine. Keep it at a quiet bubble, not a rapid boil.
  5. Meanwhile, scrub the mussels and pull off any beards; discard any that are cracked or do not close when tapped. If needed, rinse the prawns quickly and pat dry. Zest the lemon, then cut it into wedges.
  6. Nestle the sea bass on top of the sauerkraut, then scatter over the prawns and mussels. Cover and steam for 6 to 10 minutes, until the mussels have opened, the prawns are pink, and the fish flakes easily. Discard any mussels that remain closed.
  7. Turn off the heat and add the remaining 20 g butter, letting it melt into the sauerkraut for a glossy finish. Stir in the lemon zest, then taste the cabbage and adjust with a squeeze of lemon if you want it brighter. Serve hot with lemon wedges alongside.

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Recipe notes

Tips

  • Keep the heat low once the wine is added; a gentle simmer keeps the sauerkraut tender and stops the seafood from overcooking.
  • For best results, choose mussels that smell clean and briny, and cook them the day you buy them.
  • If serving anyone who is pregnant, elderly, or immunocompromised, make sure the seafood is thoroughly cooked and the mussels are fully opened before eating.

Substitutions

  • Replace sea bass fillet with sea bream for a similar delicate texture and cooking time.
  • Replace dry white wine with a slightly sweeter white wine if that is what you have; the dish will taste rounder and less sharp.
  • Replace unsalted butter with salted butter, then go easy on any additional seasoning at the table.

Storage

  • Refrigerate up to 1 days
  • Best eaten straight away. If you have leftovers, cool quickly and refrigerate; reheat the sauerkraut gently in a covered pot until piping hot, then add the seafood just long enough to warm through to avoid it turning tough.

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Choucroute de la Mer (Seafood Sauerkraut)
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Recipe overview

  • Servings: 4 servings
  • Total time: 55min (25min active)
  • Difficulty: Medium
  • Cuisine: French
  • Allergens:
    Crustaceans Fish Milk Molluscs
One pot

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