Erwtensoep (Dutch Split Pea Soup with Smoked Sausage)

Erwtensoep is the Dutch answer to a proper cold-weather soup: dense, savoury and substantial enough to serve as dinner. Green split peas simmer until they collapse into a naturally creamy base, while leek, onion, carrot and celeriac bring gentle sweetness and earthy depth. Smoked sausage gives the soup its recognisable smoky richness and is sliced back into the pot before serving. The texture should be thick rather than brothy, so it benefits from a slow simmer and occasional stirring as the peas break down. Serve it piping hot, loosening with a little stock or water if it thickens as it stands.
Cuisine style Dutch comfort food
Cooking style One-pot cooking • Make-ahead friendly • Freezer-friendly
Time commitment Slow-cooked

Why this recipe works

  • Naturally creamy texture: Green split peas break down as they simmer, thickening the soup without needing cream or blending.
  • Deep savoury base: Leek, onion, carrot and celeriac build gentle sweetness before the smoked sausage adds a rounded, savoury finish.
  • Improves as it rests: The soup thickens and the flavours settle well after chilling, making it practical for cooking ahead.

Get the most out of this recipe

Texture tips

  • For a thicker soup: Let the soup simmer uncovered towards the end, stirring regularly as the peas break down.
  • To loosen before serving: Add a little hot water or extra stock and warm gently until the soup returns to a ladleable consistency.
  • Keep the sausage tender: Add the smoked sausage near the end so it heats through without becoming tough or losing too much flavour into the soup.

Common mistakes

  • Letting the base catch: Once the peas start to collapse, the soup can stick to the bottom of the pot. Keep the heat gentle and stir more often in the final stage.
  • Serving it too thick: Erwtensoep should be hearty and spoon-coating, but not pasty. Loosen it gradually if it becomes too dense after resting.

Make-ahead tips

  • Good the next day: The flavour deepens after chilling, though the soup will thicken noticeably and may need loosening when reheated.
  • Freezes well: Cool quickly, freeze in sealed containers and defrost overnight in the fridge before reheating until piping hot.
  • Reheat gently: Warm on the hob over a low to medium heat, stirring often and adding a splash of water or stock if needed.

Ingredient notes

  • Rinse the leek well: Slice the leek before rinsing so any grit trapped between the layers can be washed away properly.
  • Use green split peas: Green split peas give erwtensoep its familiar earthy flavour and thick, creamy body as they cook down.
  • Choose a smoky sausage: A well-smoked sausage is central to the soup’s savoury character, so choose one with a pronounced but balanced smoke flavour.

Equipment you'll need

Ingredients
Instructions
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  1. Halve and slice the onion. Trim the leek, then slice it and rinse well to remove any grit; peel and dice the carrots and celeriac.
  2. Heat the olive oil in a stockpot over medium heat. Add the onion and cook for 5 minutes until softened, then stir in the leek for 2 minutes until it starts to wilt.
  3. Add the carrots, celeriac and green split peas, stirring to coat in the oil. Pour in the vegetable stock, then add the bay leaves, fine sea salt and black pepper.
  4. Bring to a gentle boil, then reduce to a steady simmer and partially cover. Cook for 60 minutes, stirring every so often, until the peas have broken down and the soup is thick and creamy.
  5. Nestle the smoked sausage into the soup and continue to simmer for 20 minutes until the sausage is heated through and the soup is very thick. If it catches on the base, lower the heat and add a splash of stock from the pot to loosen it.
  6. Lift out and discard the bay leaves. Slice the sausage and return it to the pot, then taste and adjust seasoning with a little more salt and black pepper if needed.
  7. Ladle into bowls and serve piping hot. If the soup sits and becomes too thick, loosen with a little hot water or extra stock and warm gently.

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Recipe notes

Tips

  • Rinse the leek thoroughly after slicing, as grit often hides between the layers.
  • Keep the soup at a gentle simmer and stir regularly in the last 30 minutes, as split peas can catch once they start to break down.
  • If serving anyone vulnerable, make sure the smoked sausage is heated until piping hot all the way through before serving.

Substitutions

  • Replace olive oil with butter for a richer, more traditional-style base.
  • Replace vegetable stock with chicken stock for a deeper savoury flavour.

Storage

  • Refrigerate up to 3 days
  • Cool quickly, then refrigerate in a sealed container for up to 3 days. Reheat gently on the hob, adding a splash of water or vegetable stock to loosen, and heat until piping hot; freeze for up to 3 months and defrost overnight in the fridge before reheating.

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Recipe overview

  • Servings: 4 bowls
  • Total time: 1h 50min (20min active)
  • Difficulty: Easy
  • Cuisine: Dutch
Beginner friendly One pot Freezer friendly Kid friendly

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