Madeleine Islands Quebec Seafood Chowder

Madeleine Islands Quebec seafood chowder is a creamy, hearty soup inspired by the Îles de la Madeleine, an island archipelago in the Gulf of St. Lawrence. This home-style version brings together potatoes, fish, scallops, and mussels in a light cream broth; local recipes vary, so use the seafood that is fresh and practical where you live.

Ingredients

2 tablespoons (28 g) unsalted butter
1 medium yellow onion, finely diced (about 1 cup / 150 g)
2 celery ribs, finely diced (about 1 cup / 100 g)
2 tablespoons (16 g) all-purpose flour
4 cups (950 ml) low-sodium fish stock or seafood broth
1 pound (450 g) Yukon Gold potatoes, peeled if desired and cut into ½-inch (1.25 cm) cubes
1 bay leaf
½ teaspoon dried thyme
½ teaspoon fine salt, plus more to taste
¼ teaspoon freshly ground black pepper
8 ounces (225 g) firm white fish, such as cod or haddock, cut into 1-inch (2.5 cm) pieces
8 ounces (225 g) raw sea scallops, side muscle removed and large scallops halved
8 ounces (225 g) mussels, scrubbed and debearded, or 1 cup (150 g) cooked shelled mussel meat
1 cup (240 ml) heavy cream
2 tablespoons (8 g) chopped fresh parsley
1 tablespoon (15 ml) lemon juice, plus lemon wedges for serving

Instructions

Prepare the seafood. Keep fish and scallops refrigerated while you prepare the vegetables. If using live mussels, discard any with cracked shells or any that remain open when tapped. Scrub and debeard them just before cooking. If using cooked mussel meat, keep it chilled and add it near the end.
Soften the vegetables. Melt the butter in a heavy pot or Dutch oven over medium heat. Add the onion and celery and cook for 5–7 minutes, stirring occasionally, until softened but not browned.
Make the broth. Sprinkle the flour over the vegetables and stir for 1 minute to coat. Slowly pour in the stock, whisking or stirring as you go so the flour does not form lumps. Add the potatoes, bay leaf, thyme, salt, and pepper. Bring to a gentle boil, then lower the heat and simmer uncovered for 12–15 minutes, until the potatoes are nearly tender when pierced with a knife.
Cook the live mussels, if using. Add the mussels, cover the pot, and simmer for 4–6 minutes, just until the shells open. Lift them out with a slotted spoon; discard any that stay closed. When cool enough to handle, remove most mussels from their shells, leaving a few in shells for serving if you like. Keep the broth at a gentle simmer.
Add the fish and scallops. Stir the fish and scallops into the pot. Simmer gently for about 4–6 minutes, stirring carefully once, until the seafood is opaque and cooked through. Check the thickest pieces of fish with a food thermometer: USDA FSIS lists 145°F (63°C) as the safe minimum internal temperature for fish. Do not let the soup boil hard, which can make seafood tough.
Finish the chowder. Reduce the heat to low and stir in the cream and mussel meat, if using cooked mussels. Warm for 2–3 minutes without boiling. Remove the bay leaf; add the cooked live mussels and parsley, then stir in the lemon juice. Taste and adjust salt, pepper, or lemon. Serve promptly.

Tips

Choose firm fish. Cod and haddock hold their shape well. Pollock or another firm white fish works too; delicate fish can break apart as you stir.
Use frozen seafood safely. Thaw fish and scallops overnight in the refrigerator, not on the counter. Pat them dry before adding. If they release extra liquid, the chowder may need a little more seasoning.
Make a broth substitute. If fish stock is hard to find, use low-sodium chicken broth or vegetable broth. The flavor will be less briny and distinctly seafood-like, so taste before adding extra salt. Avoid strongly flavored broths that can overpower the shellfish.
Keep the heat gentle. A rolling boil can separate the cream and toughen the seafood. Once the cream goes in, warm the chowder slowly and do not let it boil.

Serving Suggestions

Serve in warm bowls with crusty bread, soft rolls, or plain crackers for dipping. A simple green salad or crunchy cabbage slaw balances the rich broth, while lemon wedges let everyone brighten their own portion. For a more substantial island-inspired meal, offer boiled potatoes or a small serving of brown bread alongside the chowder.

Variations

Seafood combinations vary around the islands and from kitchen to kitchen. Replace the scallops with an equal amount of peeled raw shrimp, adding them with the fish; cook until opaque and firm. You can also use 1 pound (450 g) of mixed fish and shellfish in place of the listed fish and scallops, keeping the total seafood amount similar. For a lighter broth, swap half the cream for whole milk, though it will be less rich. For extra savoriness, cook 2 ounces (55 g) diced salt pork with the onion, then reduce the added salt; this gives the soup a more pronounced cured-pork flavor.

Storage and Reheating

For food safety, refrigerate the chowder within 2 hours of cooking, dividing it into shallow containers so it cools quickly. Keep it refrigerated at 40°F (4°C) or below and use within 3–4 days. Reheat only the portion you plan to eat in a saucepan over low to medium-low heat, stirring gently until it reaches 165°F (74°C); do not boil. Seafood can become firmer after reheating. Freezing is possible for up to about 2 months, but cream-based chowder may separate and the potatoes may soften; thaw in the refrigerator and reheat gently, stirring to bring the broth back together.

Frequently Asked Questions

Can I use frozen fish and scallops?
Yes. Thaw them in the refrigerator, drain any liquid, and pat dry before cooking. Add them only when the potatoes are nearly tender so they do not sit in the hot broth for too long.

Do I have to use mussels?
No. Use extra fish or scallops instead, keeping the total seafood quantity close to 1½ pounds (680 g). The chowder will lose some of the briny flavor mussels contribute, but it will still be satisfying.

How do I know when live mussels are cooked?
They should open after several minutes of covered simmering. Discard mussels that remain closed after cooking, and discard cracked or open mussels that do not close when tapped before cooking.

Can I make the chowder ahead?
You can cook the vegetable-and-potato broth a day ahead, cool it promptly, and refrigerate it. Reheat until steaming, then add the seafood and cook it through just before serving; this helps keep the fish and scallops tender.

Why did my chowder become thin?
The potatoes may not have released enough starch, or the broth may need a little more simmering before the seafood goes in. You can mash a few potato pieces into the broth to thicken it. Avoid simmering the seafood for a long time to reduce liquid, since that can overcook it.

Can I replace the heavy cream?
Whole milk can replace some or all of it for a lighter soup, but the texture will be less creamy. Add milk over low heat and do not boil. Unsweetened evaporated milk is another option with a fuller texture than regular milk.

More recipes to cook

Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes

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