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Leek Potato Soup Recipe - AKA Vichyssoise with Watercress

THINK HOT: Hot soup in winter - like a baked potato with butter and chives, except in soup form.
Or...
THINK COLD Vichyssoise - like a potato salad in summer, except in soup form and with butter instead of mayo.
Always a delicious crowd pleaser or soothing comfort food for one or a few!
Course Soups & Stews
Cuisine French
Prep Time 30 minutes
Cook Time 30 minutes
Total Time 1 hour 15 minutes
Servings 8
Author Recipes and Me

Ingredients

  • 1 stick salted butter
  • 2 lb leeks sliced in 1/2" rings
  • 2 lb potatoes roughly chopped
  • 12 cups vegetable broth
  • salt and pepper for tate
  • 2 bunch watercress can substitute with arugula, spinach, kale or other favorite greens
  • 1 cup organic whole milk

Instructions

  • MELT butter in a large soup pot. (We prefer salted butter, but use whichever you prefer and adjust salt as desired at the end.
  • ADD the leeks and potatoes, stirring to coat well with the butter.
  • COVER and cook gently for 5 minutes.
  • ADD soup stock and simmer for about 15 minutes, or until the vegetables are tender.
  • REMOVE from heat and allow to cool for 5 minutes or so.
  • ADD watercress, chopped, to keep stems from winding around blender blades, (or arugula or other substitute); (reserve a few tablespoons of leaves for garnish).
  • BLEND with a hand blender or pitcher blender to liquidize. If you prefer a partial blending so you have some pieces to chew, then use the hand blender or set aside some of the soup before you blend it.
  • SEASON to taste. 
  • FOR HOT SOUP - stir in the dairy, top with garnish and serve.
    FOR CHILLED SOUP - stir in the dairy and chill
  • GARNISH with chives, watercress or parsley, if desired.

Notes

About Use of Milk

We've found that while the half and half makes for a whiter color and creamier broth, it actually dulls the flavor a bit, so we've found the best flavor to be organic whole milk.
See also our tips on how to clean leeks for soup.