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Celeriac soup with horseradish, lemon and parsley

  • Serves 4
  • Prep 30 mins
  • Total time 1 hr 10 mins
3.5/5 rating (10 votes)
Celeriac soup with horseradish, lemon and parsley
Celeriac soup with horseradish, lemon and parsley

step by step

  • 1Sauté the leek, garlic and potato in the olive oil and 1 tablespoon of water on a medium heat for 5 minutes, stirring frequently. Add a splash more water if the vegetables stick to the pan.
  • 2Add the celeriac, lemon zest and stock. Tie the reserved parsley stalks and bay leaf together with a piece of string and add to the soup. Bring to a gentle simmer and cook with the lid on for 30 minutes.
  • 3Five minutes before the soup is finished, remove the herbs and lemon zest. Stir in the grated horseradish, mustard and milk. Simmer for the remaining 5 minutes, and then blend, adding a splash of water or stock if the soup is too thick for you. Season with salt and pepper. Stir the lemon juice and chopped parsley through the soup immediately before serving.
  • Celeriac is a great vegetable for creating luxurious bowls of soup like molten velvet. Try putting a sheet of baking paper between the lid and saucepan to stop the steam escaping and the stock evaporating. This intensifies the saltiness of the soup though, so only do it if you are using fresh stock.
  • Recipe by Kathryn Bruton

    Recipe photograph by Laura Edwards

Get ahead

Make the soup a day ahead. Add the lemon juice and parsley just before serving.

You will need

  • 1 small leek, trimmed, cleaned and roughly sliced
  • 1 garlic clove, roughly chopped
  • 1 medium potato, peeled and diced
  • ½ tbsp olive oil
  • 1 small celeriac, around 600g, peeled and chopped roughly into 1cm cubes
  • 2 pared strips of lemon zest
  • 750ml vegetable stock
  • 1 x 28g pack flat-leaf parsley, stalks reserved and leaves roughly chopped
  • 1 bay leaf
  • 2 tbsp freshly grated horseradish (or 2 tbsp creamed horseradish from a jar)
  • 1 tsp Dijon mustard
  • 250ml semi-skimmed milk
  • juice of 1 lemon

+ Nutritional Information