Erwtensoep

Erwtensoep is split peas simmered for hours with smoked sausage and vegetables until the soup turns thick enough to stand a spoon in. It's Dutch winter's defining dish, also called snert, and the spoon test isn't a figure of speech — a proper erwtensoep is genuinely judged by whether it holds a spoon standing upright for a moment before it tips.

What it really is

Dried split peas simmer for a long stretch, breaking down fully into the liquid rather than staying as distinct, whole peas, along with smoked sausage, celery, leek and onion added at different stages. The sausage's fat and smoke work through the whole pot as it cooks, and by the time it's done, the split peas have thickened the broth into something closer to a dense purée than a clear soup — genuinely thick enough that a spoon dropped in stands upright for a beat before slowly tipping over.

The thickness is the whole point, tested and expected. A thin, watery version of erwtensoep reads as a failure of the recipe, not a lighter variation — the dish is specifically meant to be dense enough for that spoon test, and thinner versions are considered simply undercooked.

How it's served

• Hot, in a deep bowl, sausage sliced and served alongside or within the soup.
• With dark rye bread and a slice of bacon on the side.
• As a full main course, especially in cold weather.

How to write it on the menu

• Flag the celery.
• Say what sausage is used, since smoked rookworst is the classic pairing.
• Note the soup's thickness as a feature, since guests expecting a lighter pea soup may be surprised by how dense it is.