INGREDIENTS
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2 medium leeks (white and pale green parts only), rinsed well and finely chopped
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2 tablespoons unsalted butter
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1 cup low-sodium chicken broth
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1 cup heavy cream
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3/4 cup water
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2 cups shelled fresh peas (2 to 2 1/2 pounds in pods)
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1/2 pound snow peas, trimmed and halved lengthwise (3 1/2 cups)
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1 1/2 teaspoons kosher salt
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1/2 teaspoon black pepper
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1pound dried egg fettuccine nests
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1/3 cup chopped fresh flat-leaf parsley
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2 teaspoons finely grated fresh lemon zest
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1/3 cup finely grated parmesan plus additional for serving