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Fiskisúpa (Icelandic Fish Soup)

By Erica Turner

Published on December 2, 2024

Time

1 hour

Yield

Serves 6

Fiskisúpa (Icelandic Fish Soup)

Ingredients

2 pounds skinless cod fillets (1 to 1½ inches thick), cut into 2-inch pieces2 teaspoons table salt, divided4 tablespoons unsalted butter 2 onions, chopped fine (2 cups)1 leeks, white and light-green parts only, halved lengthwise, sliced thin (1 cup), and washed thoroughly1⁄2 cup finely chopped celery 1 tablespoon dry sherry 1 pound Yukon gold potatoes, peeled and cut into 1⁄2-inch pieces2 (8-ounce) bottles clam juice 2 cups water 1 bay leaf 1⁄2 cup heavy cream 3 tablespoons tomato paste 2 tablespoons chopped fresh chives

Before You Begin

If using cod that is closer to 1 inch thick, check for doneness after 4 minutes in step 5. Haddock or other firm-fleshed, flaky white fish may be substituted for cod. Serve with a dark rye bread.

Instructions

  1. Place cod in large bowl and toss with 1 teaspoon salt. Cover and refrigerate until ready to use.
  2. Melt butter in Dutch oven over medium-low heat. Add onions, leek, celery, and remaining 1 teaspoon salt and stir to combine. Cover and cook, stirring occasionally, until vegetables are very soft but not browned, 22 to 25 minutes, adjusting heat as necessary.
  3. Add sherry and cook for 2 minutes. Stir in potatoes, clam juice, water, and bay leaf. Bring to simmer. Cook, uncovered, until potatoes are just tender, 12 to 15 minutes.
  4. Meanwhile, whisk cream and tomato paste in small bowl until smooth. When potatoes are tender, stir in tomato paste mixture. Simmer, stirring occasionally, to let flavors meld, 5 minutes.
  5. Arrange cod in pot in single layer, making sure pieces are submerged in liquid. Cover and cook, gently stirring occasionally so as not to break up cod too much, until cod is opaque and registers 140 degrees, 4 to 6 minutes. Discard bay leaf, and season with salt to taste. Portion soup into bowls and garnish each serving with chives. Serve.

Fiskisúpa (Icelandic Fish Soup)

Save

Time

1 hour

Yield

Serves 6

Ingredients

2 pounds skinless cod fillets (1 to 1½ inches thick), cut into 2-inch pieces
2 teaspoons table salt, divided
4 tablespoons unsalted butter
2 onions, chopped fine (2 cups)
1 leeks, white and light-green parts only, halved lengthwise, sliced thin (1 cup), and washed thoroughly
1⁄2 cup finely chopped celery
1 tablespoon dry sherry
1 pound Yukon gold potatoes, peeled and cut into 1⁄2-inch pieces
2 (8-ounce) bottles clam juice
2 cups water
1 bay leaf
1⁄2 cup heavy cream
3 tablespoons tomato paste
2 tablespoons chopped fresh chives

Test Kitchen Techniques

Ingredients

2 pounds skinless cod fillets (1 to 1½ inches thick), cut into 2-inch pieces
2 teaspoons table salt, divided
4 tablespoons unsalted butter
2 onions, chopped fine (2 cups)
1 leeks, white and light-green parts only, halved lengthwise, sliced thin (1 cup), and washed thoroughly
1⁄2 cup finely chopped celery
1 tablespoon dry sherry
1 pound Yukon gold potatoes, peeled and cut into 1⁄2-inch pieces
2 (8-ounce) bottles clam juice
2 cups water
1 bay leaf
1⁄2 cup heavy cream
3 tablespoons tomato paste
2 tablespoons chopped fresh chives

Test Kitchen Techniques

Ingredients

2 pounds skinless cod fillets (1 to 1½ inches thick), cut into 2-inch pieces
2 teaspoons table salt, divided
4 tablespoons unsalted butter
2 onions, chopped fine (2 cups)
1 leeks, white and light-green parts only, halved lengthwise, sliced thin (1 cup), and washed thoroughly
1⁄2 cup finely chopped celery
1 tablespoon dry sherry
1 pound Yukon gold potatoes, peeled and cut into 1⁄2-inch pieces
2 (8-ounce) bottles clam juice
2 cups water
1 bay leaf
1⁄2 cup heavy cream
3 tablespoons tomato paste
2 tablespoons chopped fresh chives

Test Kitchen Techniques

Why This Recipe Works

Fiskisúpa is a hearty, nourishing soup that has been prepared for generations in Iceland. It's made from a short ingredient list and comes together quickly in one pot. We created a complex flavor base by sweating onions, leek, and celery for 25 minutes, rendering them tender and translucent. We created a flavorful, briny broth with bottled clam juice cut with water. While Yukon Gold potatoes aren't strictly traditional, we liked that they made the soup feel more substantial. Cutting the fish into large pieces, submerging the pieces in the broth, and stirring them only occasionally in the covered Dutch oven ensured that they didn't break into tiny flakes.

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Before You Begin

If using cod that is closer to 1 inch thick, check for doneness after 4 minutes in step 5. Haddock or other firm-fleshed, flaky white fish may be substituted for cod. Serve with a dark rye bread.

Instructions

  1. Place cod in large bowl and toss with 1 teaspoon salt. Cover and refrigerate until ready to use.
  2. Melt butter in Dutch oven over medium-low heat. Add onions, leek, celery, and remaining 1 teaspoon salt and stir to combine. Cover and cook, stirring occasionally, until vegetables are very soft but not browned, 22 to 25 minutes, adjusting heat as necessary.
  3. Add sherry and cook for 2 minutes. Stir in potatoes, clam juice, water, and bay leaf. Bring to simmer. Cook, uncovered, until potatoes are just tender, 12 to 15 minutes.
  4. Meanwhile, whisk cream and tomato paste in small bowl until smooth. When potatoes are tender, stir in tomato paste mixture. Simmer, stirring occasionally, to let flavors meld, 5 minutes.
  5. Arrange cod in pot in single layer, making sure pieces are submerged in liquid. Cover and cook, gently stirring occasionally so as not to break up cod too much, until cod is opaque and registers 140 degrees, 4 to 6 minutes. Discard bay leaf, and season with salt to taste. Portion soup into bowls and garnish each serving with chives. Serve.

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