Risotto without root

4 tablespoons (1/2 stick) butter, divided 1/4 cup extra-virgin olive oil 1 cup minced onion 2 large heads of radicchio, halved, cored, cut into 1/3-inch[...]

1/2 cup extra virgin olive oil 2 sweet white onions , cut into 1-inch pieces 1 leek , white part only, cut into 1-inch pieces 1 cup madeira wine , at room[...]

1/2 cup extra virgin olive oil 2 sweet white onions , cut into 1-inch pieces 1 leek , white part only, cut into 1-inch pieces 1 cup madeira wine , at room[...]