INGREDIENTS
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8 ounces uncooked spaghetti
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1/2 cup (2 ounces) finely grated Parmigiano-Reggiano cheese
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1/4 teaspoon black pepper
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1/8 teaspoon salt
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1 large egg
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1 large egg white
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1/2 cup chopped pancetta (about 2 ounces)
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2 cups thinly sliced leek (about 2 large)
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2 garlic cloves, minced
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2 tablespoons chopped fresh flat-leaf parsley