Giuseppe D'Aquino makes the most of Piennolo tomatoes in this simple tomato sauce recipe, served with spaghetti, burrata, basil and lemon. A small cherry tomato from the region surrounding Mount Vesuvius, Piennolo tomatoes have a distinct flavour from the mineral-rich volcanic soil and as such have PDO status. If you cannot find Piennolo tomatoes, San Marzano, ripe cherry or pomodoro tomatoes could be used as an alternative.