Tomatoes, one of the joys of summer in most locales, thrive in Campania’s hot and sunny climate. Yet good tomatoes can be surprisingly hard to find in summer – the oval, longish, rather crisp varieties that are the region’s claim to fame are mostly used for cooking, and the best ones are canned or exported to richer parts of the world. Somewhat improbably, winter is the best time to eat fresh tomatoes in Naples. As soon as the days get shorter and the nights get colder, small cherry tomatoes with a distinctly pointy end start to appear at every vegetable stall and restaurant throughout the city – this particular version of the fruit is known as pomodorino del piennolo del Vesuvio, or simply piennolo.