"This dish was inspired solely by the straightforward combination of earthy sweet potato with the natural richness of nuts and root vegetables. I use aged balsamic vinegar to showcase the flavor of that intense, marvelously aged Italian product. The sauce of balsamic and brown butter works really well with this rustic dish...."
INGREDIENTS
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2 sweet potatoes (about 1 pound)
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1 to 11/2 cups all-purpose flour, plus more for rolling
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1 large egg, beaten
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1 teaspoon kosher salt, plus more as needed
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Freshly ground black pepper to taste
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1 tablespoon olive oil
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2 ounces pancetta, finely diced
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1/2 small white onion, finely diced
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4 tablespoons (1/2 stick) unsalted butter
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3 tablespoons aged balsamic vinegar
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2 ounces kale, stemmed and cut into thin ribbons
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1 teaspoon chopped fresh sage, plus whole leaves for garnish
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A Parmesan cheese wedge for shaving