"This classic sauce takes its spiciness from black pepper and dried chiles and its depth of flavor from guanciale, Italian salt-cured pork jowl. If you can't find it, use pancetta, which is available at better supermarkets...."
INGREDIENTS
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2 tablespoons extra-virgin olive oil
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4 ounces thinly sliced guanciale, pancetta, or chopped unsmoked bacon
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1/2 teaspoon crushed red pepper flakes
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1/2 teaspoon freshly ground black pepper
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3/4 cup minced onion
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2 cloves garlic, minced
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1 28 ounce can peeled tomatoes with juices, crushed by hand
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Kosher salt
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12 ounces dried bucatini or spaghetti
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1/4 cup finely grated Pecorino (about 1 ounce)