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Nutrition Facts
Serving Size 1 (266g) Recipe makes 6 servings The following items or measurements are not included below: 1 1/2 lbs chicken backs
Calories 311
Calories from Fat 190		(61%)
Amount Per Serving		%DV
	Total Fat 21.1g	32%
	Saturated Fat 13.0g	65%
	Monounsaturated Fat 5.9g
	Polyunsaturated Fat 1.0g
	Trans Fat 0.0g
Cholesterol 73mg		24%
Sodium 312mg		13%
Potassium 462mg		13%
Total Carbohydrate 27.6g		9%
	Dietary Fiber 2.8g	11%
	Sugars 5.5g
Protein 5.3g		10%
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Classic Vichyssoise

Recipe #381616 | ½ day | ½ day prep | add private note

⁽⁰⁾ RATE IT NOW Print Recipe

By: R. L. Wallace
Jul 15, 2009

This cold leek-and-potato soup, a French-American classic, was perfected in the early 1900s by Louis Diat, the chef at the Ritz Carlton Hotel in New York. Everyone has eaten it (or at least heard of it), but if it is served at all these days, it is often a watery, grainy, yellow-green puree, instead of the ivory-colored velvety cream it should be. Diat's soup is basically milk and cream that is flavored and thickened by the vegetable puree; most current recipes are just the reverse, a not-very-smooth puree with a token amount of cream tossed in. Diat included "medium" cream, now a thing of the past; the recipe below substitutes more milk and heavy cream, but scrupulously follows Diat's directions for such flavor-enhancing steps as sauteing the leeks in butter. Made correctly, there is no reason to be bored with this soup, and it doesn't need jazzing up with a lot of "creative" ingredients (or even a sprinkling of chives). It fully deserves its fame.

SERVES 6 -8 (change servings and units)

Ingredients

1 1/2 lbs leeks, for 3/4 to 1 lb. trimmed white parts
1 1/2 lbs chicken backs
5/8 teaspoon salt, in all
2 tablespoons unsalted butter
4 ounces onions, sliced (1 medium onion)
6 ounces baking potatoes, peeled and sliced (8 oz. unpeeled)
1 1/2 cups milk
1 cup heavy cream (or more as needed)

Directions

1
Start the chicken stock 2 days in advance: Trim away all green sections from the leeks; cut open the whites as necessary to wash out the grit, then dry and refrigerate in a plastic bag. Wash and reserve the leek greens.
2
Wash the chicken backs, poking into the crevices with your finger to rinse away all bits of liver. (Chicken backs are best because they don't make an overly gelatinous stock; for cartilaginous parts like breast trimmings or wings, use only a pound.).
3
Simmer the chicken and 1/4 teaspoons salt for 6 hours in water to cover, skimming off all scum (don't try to remove the fat); after 2 hours, add some or all of the leek greens. Strain the stock finely, making about 2 cups; cool and refrigerate. Before using, scrape off the congealed fat.
4
Cook and refrigerate the soup base 1 day in advance: Saute the onions in a heavy 2-quart saucepan, starting on fairly high heat and reducing to medium as soon as the fat clarifies. When the onions are golden, increase the heat and add the leeks gradually; lower the heat again as they cook, stirring repeatedly to keep the juices from browning.
5
In 15 to 20 minutes, when everything is golden but not browned, add the stock and 3/8 teaspoons salt, and bring to a boil. Add the potatoes, partially cover the pan, and simmer actively for 35 minutes. (Don't use too much potato, or the soup will end up too thick.).
6
In two batches, finely puree the soup base in a blender at high speed, then pour it back into the saucepan. Rinse out the blender with the milk, add it to the soup base, and heat slowly until it just starts to simmer, stirring continually across the pan bottom and around the sides.
7
Finally, put the soup through a very fine strainer, scraping hard with a rubber spatula to push everything through. Cool quickly and refrigerate.
8
On serving day, stir the cream gradually into the softly jelled soup. Carefully adjust the consistency, adding more cream (or water or both) as necessary to make a thick but pourable liquid; a spoonful poured back into the bowl should level out, not stay in soft peaks. Taste for seasoning -- don't oversalt, or you'll lose the natural sweetness of the onion and cream.
9
Vichyssoise keeps refrigerated up to 10 days.