Joshua McFadden's Bitter Greens Salad with Melted Cheese

INGREDIENTS

3/4 lb

1 large head radicchio

5 oz

Arugula

Saba or balsamic vinegar

Kosher salt and freshly ground pepper

Olive oil, Extra-virgin

3 tbsp

Red wine vinegar

1/2 cup

Hazelnuts, lightly toasted

1/4 pound Crucolo, provolone, Taleggio, or Fontina cheese, grated