The gorgeous platters of salami, fresh mozzarella, olives, and pickled vegetables that begin so many Italian feasts inspired this salad. It's perfect for a backyard dinner — not only easy to make but also easy to eat, even from a paper plate with a plastic fork. Two secrets sell this salad: It's made with mostly store-bought ingredients, and it will last several days in the refrigerator. In fact, it's better on the second day.