INGREDIENTS
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(1/2 stick) butter, divided
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extra-virgin olive oil
•
minced onion
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large heads of radicchio, halved, cored, cut into 1/3-inch strips
•
arborio rice or medium-grain white rice (about 13 ounces)
•
amarone or other dry red wine
•
(about) low-salt chicken broth
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freshly grated Parmesan cheese