Panzanella is a traditional Tuscan salad that is also popular in Rome. It is made with stale bread, tomatoes, cucumbers, red onions, basil, and dressed with olive oil and vinegar. The salad is a great way to use up leftover bread and is perfect for the hot summer months. The combination of the juicy tomatoes, crunchy cucumbers, and the soaked bread creates a refreshing and satisfying salad that is full of flavor.