I made this delicious minestrone using the vegetable water left over from preparing zucchini, carrots, and potatoes for a savory pie. Leftover recipes are often the best—they can become the star of the table, letting you create tasty dishes without wasting anything, not even scraps. Our Italian cuisine, especially from the countryside, is known for recipes that use up leftover ingredients or dishes—a humble but flavorful tradition, once made out of necessity by women. Reducing food waste is essential, and each of us can make a difference.