"This smooth soup is a specialty of the house at Bayona in New Orleans. What seems like a prodigious quantity of garlic and onions is mellowed by the long, slow cooking. If you can, make the soup a day ahead; the flavor will be even better...."
INGREDIENTS
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2 tablespoons olive oil
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2 tablespoons butter
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2 pounds onions, about 4, chopped
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2 cups garlic cloves, about 4 large heads, chopped
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2 quarts Chicken Stock or canned low-sodium chicken broth
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1/2 loaf day-old French bread (about 1/4 pound), cut into chunks
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1 bouquet garni: 6 parsley stems, 9 sprigs fresh thyme or 1 1/2 teaspoons dried, and 1 bay leaf
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1 1/2 teaspoons salt
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2 cups half-and-half
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1/4 teaspoon fresh-ground black pepper
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Croutons, optional