Traditional Cullen Skink Recipe: Scotland’s Smoked Haddock Soup

The Cullen Skink recipe is one of Scotland’s great gifts to the world’s table. It is creamy, warming, and built on the simplest of ingredients — smoked haddock, potatoes, onion, and cream. This soup has fed Scottish fishing families for generations. Today it sits on restaurant menus across the country. If you want to make Cullen Skink at home, this is the recipe.

What Is Cullen Skink?

Cullen Skink is a thick, creamy Scottish soup made from smoked haddock, potatoes, and onion. It comes from the small fishing village of Cullen on the Moray Firth coast in north-east Scotland. The word “skink” is an old Scots word for a soup or stew made from shin — though this version uses fish, not meat. Fishing families in Cullen made this soup out of need. The Moray Firth was full of haddock. Smoking the fish made it last through cold winters. The soup was filling, cheap, and used every part of the catch. Today it appears on menus from Edinburgh hotel restaurants to coastal cafés in the Highlands. If you want to understand Scotland through its food, Cullen Skink is a good place to start. You can read more about its history in our guide to why Scottish fishermen created this soup that nobody has ever stopped ordering.

Cullen Skink Recipe: What You Will Need

This recipe serves four people as a starter or two as a generous main course. It takes around 35 minutes from start to finish. The key is using proper undyed smoked haddock — the bright yellow kind sold in most supermarkets is artificially coloured and has less flavour. Look for pale, creamy-coloured naturally smoked haddock if you can find it.

Ingredients

• 500g (about 1lb) undyed smoked haddock fillet
• 600ml (about 1 pint) whole milk
• 200ml double cream
• 1 large onion, finely chopped
• 500g floury potatoes (such as Maris Piper or King Edward), peeled and diced
• 30g butter
• 1 bay leaf
• Salt and white pepper
• Small bunch of chives, finely chopped, to serve
• Good crusty bread, to serve

Equipment

• A wide, deep pan
• A slotted spoon
• A potato masher or fork

How to Make Cullen Skink: Step-by-Step

Step 1 — Poach the haddock

Place the smoked haddock in the pan, skin side down. Pour over the milk and add the bay leaf. Bring to a gentle simmer over medium heat. Cook for 8 to 10 minutes until the fish is just cooked through — it should flake easily when pressed with a fork. Do not let the milk boil hard or it will scorch. Lift the haddock out with a slotted spoon and set aside to cool slightly. Pour the poaching milk into a jug — you will use it to build the soup. Remove the bay leaf and discard it.

Step 2 — Soften the onion

Wipe the pan clean and melt the butter over medium-low heat. Add the chopped onion and cook gently for 8 to 10 minutes until soft and translucent. Do not rush this step. A properly softened onion gives the soup a sweetness that makes all the difference.

Step 3 — Cook the potatoes

Add the diced potatoes to the pan with the softened onion. Pour over the reserved poaching milk. Add the double cream. Bring to a gentle simmer and cook for 12 to 15 minutes until the potatoes are completely tender.

Step 4 — Flake the fish

While the potatoes cook, remove the skin from the haddock and flake the flesh into large pieces. Check carefully for bones — smoked haddock fillets can contain small pin bones, especially along the centre. Remove every one you find.

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Step 5 — Bring it together

Once the potatoes are tender, use a potato masher or the back of a fork to roughly crush about a third of the potato pieces directly in the pan. This thickens the soup naturally without adding flour or cornflour. The result should be thick but not smooth — you want chunks of potato alongside the creamy broth. Add the flaked haddock to the pan and stir gently to combine. Season with white pepper. Taste before adding salt — the smoked haddock is already salty, so you may not need any extra. Heat through gently for two to three minutes.

Step 6 — Serve

Ladle the Cullen Skink into warmed bowls. Scatter over the chopped chives and add a crack of black pepper if you like. Serve immediately with thick slices of crusty bread — a good Scottish oatmeal bread is ideal, but any good loaf will do.

Tips for the Best Cullen Skink

Use naturally smoked haddock

The quality of your smoked haddock matters more than anything else in this recipe. The dyed yellow haddock common in supermarkets is fine, but naturally smoked haddock — pale cream in colour, with a gentler, more complex smokiness — makes a noticeably better soup. Look for it at fishmongers, farmers’ markets, or good supermarket fish counters.

Choose the right potatoes

Floury varieties like Maris Piper or King Edward are ideal. They break down easily when mashed and absorb the creamy broth well. Waxy potatoes hold their shape but do not thicken the soup in the same way — you want that rustic, slightly thick texture that makes Cullen Skink so satisfying.

Don’t over-blend it

Traditional Cullen Skink is not a smooth, blended soup. It is chunky and rustic. Mash only a portion of the potatoes. Leave the rest in pieces. The haddock should be in generous flakes, not shredded. A restaurant version might be more refined, but the home version should look like it came from a fisherman’s kitchen — and that is exactly the point.

Make a day ahead

Cullen Skink is one of those soups that improves overnight. The flavours deepen and the smoked fish infuses the broth more fully. Reheat gently the next day, adding a splash of milk if the soup has thickened too much. It keeps well in the fridge for two days.

Variations on the Classic Recipe

The creamier version

Some Scottish cooks use all cream and no extra milk for an exceptionally rich soup. This is closer to what you might find in upmarket Edinburgh restaurants. It is delicious, but very filling — reduce your serving size if you go this route.

Adding leeks

A few families add finely sliced leeks alongside the onion. It adds a mild sweetness that works well. Soften the leeks in butter with the onion at the start — they need the same cooking time.

The modern chef’s version

Some modern Scottish chefs add a small splash of whisky before serving — just a teaspoon per bowl, added at the table. It is not a classic move, but it is very Scottish. Try a mild Lowland whisky. Avoid a heavily peated Islay malt, which would overpower the fish.

Where to Eat Cullen Skink in Scotland

The best place to try Cullen Skink is, naturally, in Cullen itself. The Seafield Arms Hotel and the local cafés in this small Moray Firth village serve the soup year-round. The surrounding coastline — known as the Moray Coast — is one of the most underrated parts of Scotland, with dramatic cliffs, beautiful beaches, and distilleries aplenty. If you are visiting the Highlands, Inverness is a good base. Read our guide to the best things to do in Inverness for ideas on what to see while you are there — Cullen Skink will likely appear on several menus. In Edinburgh, Cullen Skink features on menus at classic Scottish restaurants like The Witchery and The Scotsman Hotel’s dining room. In Glasgow, look for it at traditional Scottish pubs and market food stalls. Scotland’s coastline is the best hunting ground — any good seafood restaurant near the sea will have a version. For more Scottish food to try at home, see our guide to the best soups of Scotland and our classic Scotch broth recipe. Both are central to the Scottish kitchen and worth making before or after Cullen Skink.

The Story Behind the Name

The village of Cullen sits on the Moray Firth coast, about 60 miles east of Inverness. It is a small place. A few hundred people live there. The beach is long, backed by dramatic sea stacks called the Three Kings. A railway viaduct once carried trains — now it carries walkers. The village is modest in size but big in food history. The soup takes its name from the village, not from any ingredient. “Skink” in old Scots referred to a type of stew or broth. Beef skink — made from shin of beef — was the original dish. When fishing communities adapted the recipe to use the abundant local haddock, the name evolved into Cullen Skink. Scotland’s fishing history runs deep along this coastline. You can learn more about it in our article on why Scots called this fish the ‘Silver Darlings’ — the herring trade that once shaped entire communities on the Moray Firth.

Frequently Asked Questions

What does Cullen Skink taste like?

Cullen Skink tastes smoky, creamy, and deeply savoury. The smoked haddock gives it a gentle but distinct smokiness, balanced by the sweetness of the onion and the richness of the cream. It is substantial and warming — more like a chowder than a thin broth. Most people find it immediately comforting, especially on a cold day.

Can I make Cullen Skink without cream?

Yes. Many older recipes use only milk — no cream at all. The soup will be lighter and less rich, but still very good. You can also use crème fraîche as a substitute for double cream, which adds a subtle sharpness. Some cooks use half-fat crème fraîche for a lighter version without losing the creaminess entirely.

What is the difference between Cullen Skink and chowder?

Cullen Skink and chowder share similar DNA — both are creamy, potato-based, and built around fish or shellfish. The main difference is the fish. Cullen Skink uses smoked haddock exclusively, which gives it a more intense, smoky flavour than the sweet, mild clam or cod used in most American chowders. Cullen Skink also tends to be slightly thicker and less sweet.

Where can I buy smoked haddock in the United States?

Smoked haddock is less common in the United States than in the UK, but it is available. Look for it at Whole Foods, specialist fish markets, or online from seafood suppliers. Finnan haddie — the traditional Scottish name for naturally smoked haddock — can be ordered online and shipped frozen. If you cannot find haddock, naturally smoked cod or smoked pollock make reasonable substitutes, though the flavour will be slightly different.