Citrus Salad with Rosemary Candied Walnuts & Radicchio

I love sturdy and crunchy bitter greens like endive and radicchio. Their bitterness can be bracing on their own, but mixing them with sweet fruit, fatty nuts, and an acidic dressing creates a wonderfully balanced salad perfect for pairing with a rich soup such as Gruyère, Cauliflower & Potato Soup or French Onion Soup. When making this salad, I always start with the dressing and use it as a quick-pickling liquid for t