Mixed Winter Chicory Salad with Prosciutto and Candied Walnuts

Ingredients

• ½ tablespoon cayenne pepper
• 2 tablespoons sugar
• ½ teaspoon sea salt
• 6 egg whites
• ½ teaspoon ground ginger
• 3 cups walnut halves (about ¾ pound)
• ½ small head radicchio
• ½ small head Treviso
• ½ small head Castelfranco
• 3 tablespoons extra-virgin olive oil
• 3 tablespoons white balsamic vinegar
• ¼ teaspoon sea salt
• Freshly ground black pepper, to taste
• 1 ounce prosciutto, cut into thin strips
• 1 cup candied walnuts (see recipe here)