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Soup · French

Tourin Blanc (Périgord Garlic and Onion Soup)

40 min Serves 4 ~326 kcal/serving ~£3.90 (£0.97/serving) Vegetarian

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Ingredients

  • 4 onions, thinly sliced
  • 6 garlic cloves
  • 900 ml vegetable stock
  • 2 egg yolks
  • 1 tbsp white wine vinegar
  • 30 g unsalted butter
  • 60 g gruyère cheese, grated
  • 4 day-old crusty bread

Nutrition (per serving)

Calories
326 kcal
Protein
12.3 g
Carbohydrate
34.3 g
of which sugars
10.3 g
Fat
14.7 g
of which saturates
7.8 g
Fibre
3.5 g
Salt
2.32 g

Estimated from typical values for each ingredient — a guide, not a substitute for the label on what you actually buy.

Method

  1. 1

    Melt the butter in a large pot and cook the onions and garlic gently for 15 minutes, stirring often, until very soft but not coloured.

  2. 2

    Pour in the vegetable stock, bring to a simmer and cook for 15 minutes.

  3. 3

    Whisk the egg yolks with the white wine vinegar in a bowl, then whisk in a ladleful of the hot soup to warm the yolks through.

  4. 4

    Stir this mixture back into the pot off the heat until the soup thickens slightly and turns silky.

  5. 5

    Place a slice of bread in the base of each bowl, scatter with the gruyère cheese and ladle over the hot soup.

  6. 6

    Serve immediately.

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