Finnish Salmon Soup (Lohikeitto)

Method

1. Melt the butter in a large saucepan over medium heat. Add the sliced leek and cook for 3–4 minutes until softened but not browned. Leeks are milder than onions and create a sweeter, more delicate base — this is why Finnish cooking uses them instead of onions in seafood soups.

2. Add the potatoes, carrots, stock (or water), bay leaf, allspice berries, and salt. Bring to a boil, then reduce to a simmer. Cook for 15–18 minutes until the potatoes are just tender when pierced with a knife. The potatoes should hold their shape — not fall apart.

3. Add the salmon cubes and cook for 4–5 minutes at a gentle simmer. Don't stir aggressively — the salmon is delicate and breaks apart easily. The fish is done when it's opaque on the outside but still slightly translucent in the center. It will continue cooking in the hot broth.

4. Remove from heat and stir in the heavy cream. The cream should warm through from the residual heat but not boil. Season with white pepper and adjust salt. Remove the bay leaf and allspice berries.

5. Stir in the fresh dill — use a generous amount, at least 3 tablespoons. The dill should be visible in every spoonful. Ladle into warm bowls and serve with dark rye bread and butter — the traditional Finnish accompaniment.

Equipment

• Large saucepan or Dutch oven Recommended: Lodge 6-Quart Enameled Cast Iron Dutch Oven · Also good: Lodge 6-Quart Enameled Cast Iron Dutch Oven
• Ladle Recommended: OXO Good Grips Stainless Steel Ladle
• Cutting board Recommended: John Boos Maple Edge-Grain Cutting Board 18x12

Chef Notes

• The most important thing: Add the salmon in the last 5 minutes of cooking. Salmon overcooks quickly in hot liquid — it should be barely opaque and still slightly translucent in the center when you serve. Residual heat finishes it in the bowl.
• This is lohikeitto — Finland's most beloved soup. It's simple, creamy, and deeply comforting. The dill is not optional — it defines the dish.
• Use allspice berries (whole pimento), not ground allspice. The whole berries infuse gently; ground allspice would overpower the delicate salmon.
• The cream goes in at the end, off heat. Adding cream to boiling liquid can cause it to curdle. Stir it in gently after removing from heat.
• Finnish salmon soup is traditionally made with water, not stock. The salmon and vegetables create their own broth. Stock makes it richer but isn't necessary.

Common Substitutions

Ingredient	Substitution	Notes
Salmon	Arctic char or trout	Similar fat content and flavor. Both work beautifully
Heavy cream	Coconut cream	Dairy-free version — adds a subtle sweetness
Leek	1 small onion, diced	Onion is sharper — use less (half an onion)
Fish stock	Water	Traditional Finnish method — the salmon creates its own broth
Fresh dill	1 tsp dried dill	Fresh is dramatically better here. Dried dill tastes flat in soup

What You're Practicing

Finnish salmon soup teaches you the Scandinavian approach to seafood — gentle cooking, cream-based broths, and fresh herbs. The technique of adding delicate protein at the very end of cooking (rather than simmering it for the full duration) is critical for fish, shrimp, and scallops. Overcooking seafood is the most common mistake in home cooking, and this recipe trains you to pull it early. Visit Techniques for more on seafood cooking.

You're also learning cream soup technique — adding dairy off heat to prevent curdling, and using starchy potatoes to naturally thicken the broth. This same approach applies to chowders, bisques, and cream-based pasta sauces. Explore more at Mother Sauces.