Blue Soup (Leek Soup, Untied)

Serve when

Serve it proudly whatever color it turns out — as Mark says, raising a spoon of the blue original: 'It's really... really very good.'

In the movie

Theatrical

01:02:38 Bridget's birthday dinner catastrophe: the celeriac-leek soup turns bright blue after the string tying the leeks dyes the broth — and Mark Darcy eats it gallantly anyway. First course of the menu he salvages.

The blue soup is rom-com canon: proof that the dinner doesn't have to work for the evening to. Mark's verdict — eating it without blinking — is the moment he stops being insufferable. The string was the culprit; the recipe was always fine.

Ingredients

3 leeks, cleaned and sliced — tied with NOTHING, or with plain undyed twine
1 small celeriac, peeled and diced
2 potatoes, diced
2 tablespoons butter
6 cups chicken or vegetable stock
½ cup cream
salt and white pepper
Chives, to serve

Method

Sweat the leeks in butter until silky, 8 minutes, no color.
Add celeriac, potato, and stock; simmer 25 minutes until tender.
Blend velvet-smooth; enrich with cream; season. If you're using a countertop blender rather than a stick blender, work in batches and vent the lid — hot soup builds steam.
Confirm the color. It should be pale green. If it is blue, you've honored the source material — proceed with confidence.
Scatter chives and serve to guests who love you regardless.

Beyond the recipe

Go deeper

From Film to Fork: the blue soup, decoded

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