The sweet potato, with its red skin and orange flesh, is cooked inside a mobile cart and oven that the vendor negotiates in congested places. Hot and sweet, it is in great demand in winter and spreads a glow inside people on cold evenings.

There used to be a sweet potato with white skin which has almost disappeared. It is not much mourned, for it is less sweet than the red one.

Marconi in town seems to have had a permanent sweet potato cart in front of it.