Leek and potato soup

  • 50 min
  • Prep 15 min
  • Cook 35 min
  • Serves 4
  • easy

Leeks sweated gently in butter and simmered with potatoes and stock, then partly blended into a thick, comforting soup.

Method

  1. 1

    Halve the leeks lengthways, rinse between the layers to wash out any grit, then slice them.

  2. 2

    Melt the butter in a large saucepan over medium-low heat.

  3. 3

    Add the leeks, onion and a pinch of salt and stir to coat them in the butter.

  4. 4

    Cover and sweat, stirring now and then, until soft and sweet but not browned.

  5. 5

    Add the potatoes and stock and bring to the boil.

  6. 6

    Simmer, partly covered, until the potatoes are completely soft.

  7. 7

    Blend about half the soup with a stick blender, leaving some pieces whole, or blend it all for a smooth soup.

  8. 8

    Stir in the milk and reheat gently without boiling.

  9. 9

    Season well and serve scattered with chives.

Notes

  • Keep the dark green leek tops for making stock.
  • Blended until silky, sieved and served cold, this becomes vichyssoise.
  • It freezes well before the milk goes in. Add the milk when reheating.

Equipment

Large saucepan with lid, Stick blender

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