Crawfish Vichyssoise with Lemon Poached Leeks and French Bread Croutons

Total Time:
22 hr 8 min
Inactive:
40 min
Cook:
21 hr 28 min

Yield:
6 cups, for 6 to 8 servings
Level:
Advanced

Ingredients
  • 1 pound live crawfish, or 1 pound shrimp shells and 1/2 pound cooked and peeled crawfish tails
  • 3 quarts water
  • 2 tablespoons salt
  • 1/4 cup liquid crab and shrimp boil (recommended: Zatarain's)
  • 1 cup coarsely chopped yellow onions
  • 3/4 cup coarsely chopped celery
  • 3 lemons, peels and white pith removed (peel from 1/2 lemon reserved for the Lemon Poached Leeks, recipe follows)
  • 3 bay leaves
  • 10 whole black peppercorns
  • 1 pound leeks, rinsed well and trimmed
  • 4 tablespoons unsalted butter
  • 2 pounds Idaho potatoes, peeled and cut into 1-inch cubes
  • 2 cups heavy cream
  • Lemon Poached Leeks:
  • 1 large leek, well rinsed and trimmed
  • 2 cups strained crawfish stock, shrimp stock, or chicken stock
  • 1/2 cup dry white wine
  • Peel from 1/2 lemon, coarsely chopped
  • 2 bay leaves
  • 1/8 teaspoon freshly ground black pepper
  • French Bread Croutons:
  • 1 (12-inch) long loaf French or Italian bread, cut into 1/4 to 1/2-inch slices
  • 1/4 cup olive oil, or more as needed
  • 1/4 teaspoon salt
  • 1/8 teaspoon freshly ground black pepper
Directions
To purge live crawfish:

Put the crawfish in a large container filled with salted water. Let sit for 30 minutes. Drain and rinse in cold running water until the water runs clear.

To make the crawfish stock:

Combine the 3 quarts of water, salt, crab and shrimp boil, onions, celery, lemons, bay leaves, and peppercorns in a heavy 8-quart stockpot. Bring to a boil and cook for 5 minutes. Add the purged crawfish in a basket and cook until they turn bright red, 10 to 12 minutes. Transfer the crawfish to a baking sheet and spread evenly to cool. When cool enough to handle, peel the crawfish, reserving the tails and discarding the shells. Strain the cooking liquid through a fine mesh strainer into a clean container. (Alternately, if live crawfish are not available, add 1 pound of shrimp shells to the boiling liquid. Boil for 30 minutes to make a rich shrimp stock. Strain the cooking liquid and discard the shells.)

Trim the leeks, discarding the green tops. Cut the white parts crosswise into 1/2-inch slices and put them in a bowl of ice water to soak for 5 minutes. Drain, then place in a fresh bowl of ice water and soak again for 5 minutes. Drain well.

Melt the butter in a Dutch oven or large, heavy pot over medium-high heat. Add the leeks and cook, stirring, until soft, about 5 minutes. Add 1 quart of the strained stock and the potatoes. Reduce the heat to medium-low and simmer, stirring occasionally, until the potatoes are soft, about 25 minutes.

Remove from the heat and puree the mixture until smooth with a hand-held immersion blender, or in batches in a food processor or blender. Adjust the seasoning, to taste.

Scald the cream in a small saucepan over medium-high heat. Remove from the heat and add to the pureed soup, stirring well with a large wooden spoon. Chill the soup completely before serving.

For the Lemon Poached Leeks:

Trim the leeks, discarding the green tops. Cut into thin strips and place in a bowl of ice water. Soak for 5 minutes to remove any grit, then drain. Place in a clean bowl of ice water and soak again for 5 minutes. Drain well.

Combine the crawfish stock, wine, lemon peel, bay leaves, and pepper in a medium saucepan. Bring to a boil. Reduce the heat to medium-low. Add the leeks and simmer until tender, about 10 minutes. Remove from the heat and let the leeks sit in the poaching liquid for 10 to 15 minutes.

Drain in a fine mesh strainer. Discard the bay leaves and reserve the poaching liquid as desired for another use. Set the leeks aside until ready to serve.

For the French Bread Croutons:

Preheat the oven to 400 degrees F.

Place the bread on a baking sheet and brush 1 side of each slice with the olive oil, then lightly season with the salt and pepper. Bake for 8 minutes, or until light golden brown. Remove from the oven and let cool slightly.

Serve the croutons to accompany dips or soups.

To serve, ladle the soup into bowls and arrange 8 to 12 chilled, cooked crawfish tails around the edge of the soup. (Alternately, if using frozen tails with shrimp stock, see directions in the headnote, above.) Place 1 heaping tablespoon of the Lemon Poached Leeks in the center of the bowl, and serve with the croutons.


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