Cullen Skink recipe

A classic Scottish smoked haddock, potato and leek soup, rich and warming for a Burns Night dinner.

40 min · Easy · Scottish Jump to method

Cullen Skink

Ingredients

4 servings

  • 400 g smoked haddock
  • 500 g potatoes
  • 2 leeks
  • 600 ml milk
  • 25 g butter
  • 1 bay leaf
  • to taste black pepper
  • 1 small onion
  • 50 ml double cream
  • 1 tbsp chopped parsley
Nutrition Per servingEstimated
Calories 444 kcal
Protein 28 g
Carbohydrates 37 g
Fat 21 g
Saturated fat 12.5 g
Fibre 4.5 g
Sugar 11 g
Sodium 720 mg

Why this works

A hearty, protein-rich soup with moderate carbohydrates and fairly high saturated fat, best enjoyed as a filling main meal rather than a light dish.

High-quality protein. Smoked haddock provides a substantial amount of protein, supporting muscle maintenance and satiety.

B vitamins and iodine. Fish and milk contribute vitamin B12, riboflavin and iodine, which support energy metabolism and thyroid function.

Sodium and saturated fat to note. Smoked haddock and added cream/butter increase sodium and saturated fat, so portion size matters if watching cardiovascular health.

Method

  1. Peel and dice the potatoes, then trim and slice the leeks.

    Cut the potato pieces to a similar size so they soften at the same rate, and keep them no larger than a large hazelnut to avoid a mealy exterior with a hard centre.

  2. Melt the butter in a large saucepan and soften the leeks for 5 minutes without browning.

    Keep the heat at medium-low and watch for the leeks to turn glossy and translucent rather than take on colour; any browning will give the soup a sweet, caramelised note that is not wanted here.

  3. Add the potatoes, bay leaf and milk, then bring gently to the boil and simmer until the potatoes are tender.

    As soon as the milk edges start to tremble, lower the heat so it only barely bubbles around the sides, otherwise the milk may catch on the base or form a skin.

  4. Add the smoked haddock and cook for 5 to 8 minutes until it flakes easily.

    Slip the haddock into the hot liquid in generous flakes rather than one solid piece if it is thick, and avoid a rolling boil so the fish stays succulent instead of stringy.

  5. Remove the bay leaf, season with black pepper, then stir in a little double cream if using.

    Taste before adding much salt, since the haddock usually carries plenty of salinity, and swirl in the cream off the heat so the soup stays smooth and does not split.

  6. Serve hot with crusty bread and a sprinkle of parsley if liked.

    Warm the bowls first if you can, because Cullen skink is at its best piping hot and the soup will lose its comforting, smoky richness quickly once ladled out.

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