INGREDIENTS
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1poundsweet Italian sausage links, casings removed and broken into pieces
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1large onion, chopped
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128-ounce can diced tomatoes
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2tablespoonstomato paste
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2cloves garlic, chopped
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kosher salt and black pepper
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2large russet potatoes (about 1 pound)
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1small bunch kale, stems discarded and leaves torn (about 7 cups)
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1/2cupmilk
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1/2cupolive oil, plus more for serving