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Leek and Potato Soup

Homemade soups fill the kitchen with a welcome air, and can be so full and natural and fresh that they solve that always nagging question of “what to serve as a first course.”

Recipe information

  • Yield

    for about 2 quarts, serving 6

Ingredients

3 cups sliced leeks (white and tender green parts)
3 cups peeled and roughly chopped “baking” potatoes
6 cups water
1 1/2 tsp salt
1/2 cup sour cream or crème fraîche (see page 9), optional

Preparation

  1. Step 1

    Bring ingredients to the boil in a 3-quart saucepan. Cover partially and simmer 20 to 30 minutes, until vegetables are tender. Correct seasoning. Serve as is, or purée, and/or top each portion with a dollop of the cream.

  2. Variations

    Step 2

    ONION AND POTATO SOUP. Substitute onions for leeks, or use a combination.

    Step 3

    CREAM OF LEEK AND POTATO SOUP. After simmering the preceding soup, purée it and whisk in 1/2 cup heavy cream. Reheat to the simmer again before serving.

    Step 4

    WATERCRESS SOUP. Add a bunch of washed watercress leaves and stems to the base soup for the last 5 minutes of cooking. Purée. Garnish with a scattering of fresh watercress leaves.

    Step 5

    COLD SOUPS. Such as vichyssoise. Purée any of the above, stir in 1/2 cup cream, and chill. Correct seasoning just before serving; stir in chilled cream if you wish. Top each bowl with minced fresh chives or parsley (or fresh watercress leaves).

    Step 6

    SOUPE DU JOUR. Meaning add anything else you have on hand, such as cauliflower, broccoli, green peas, spinach, cooked or raw. This is how you may come up with some of your own marvelous ideas and secret “house recipes.”

  3. How to Prepare Leeks

    Step 7

    Trim off the root ends, keeping the leaves attached. Cut off tops so the leeks are 6 to 7 inches long. Starting 1/2 inch from the root and keeping leaves attached, slit each leek lengthwise in half and then in quarters. Wash under cold running water, spreading the leaves apart to rinse off all dirt. Leeks can be braised whole (page 33) or sliced crosswise into pieces for soup. To julienne, cut leeks crosswise into 2-inch pieces, press leaves flat, and slice lengthwise into matchsticks.

  4. To Purée a Soup

    Step 8

    To use an immersion blender, set the machine upright in the center bottom of your soup pan, turn it on and move it around, but do not bring it to the surface. To use the food processor, strain the soup and turn the solids into the processor, adding to them a little of the liquid, then process, adding a little more liquid as needed. To use the vegetable mill, strain the soup and add the solids gradually to the mill, passing them through with small additions of the liquid.

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