An appetizer that is as tasty as it is simple. Ingredients: 2 pears 2 small zucchini 1/2 cup extra-virgin olive oil 2 tablespoons balsamic vinegar 1/4 pound Fontina 1/4 pound Parmigiano-Reggiano 1/4 pound walnuts, chopped Arugula leaves, for garnish ....

