In a small pot, heat the stock over medium-low heat until just before boiling. Reduce the heat to low and keep warm. In a deep, 14-inch nonstick saute pan, heat the olive oil and butter over medium-high heat. Add the shallot and saute for 2 to 3 minutes, until the shallot is softened but not colored. Add the rice and stir well, making sure to coat all the grains in oil. Toss the rice a few times, then add the wine and let it reduce for 2 to 3 minutes.
Reduce the heat to medium-low and slowly start adding the stock, a 4- to 6-ounce ladleful at a time. Stir constantly, giving the rice time to absorb the liquid each time before adding another ladleful, until the rice is al dente, 15 to 25 minutes.
Add the Taleggio and let it melt completely, about 4 minutes. Add the Parmesan and season with salt and pepper to taste. Remove the pan from the heat and add the radicchio, stirring to mix it well with the rice.
Serve on plates garnished with the parsley, a touch of grated Parmesan, and lastly, a generous teaspoon of the honey.
"Extra Virgin: Recipes & Love from Our Tuscan Kitchen" by Debi Mazar and Gabriele Corcos (c)Clarkson Potter 2014. Provided courtesy of Debi Mazar and Gabriele Corcos by arrangement with Clarkson Potter. All rights reserved.