Italy's best cheap food doesn't always have a restaurant address — sometimes it has WHEELS. The porchetta van on a Lazio roadside (€4 panino of slow-roasted pork, better than any sit-down restaurant). The lampredotto cart in Florence (€4 cow-stomach sandwich — don't think, just eat). The arancini window in any Sicilian bar (€2 fried rice ball that contains an entire meal). Italian street food is the democratic foundation of Italian cuisine — where €3-5 buys food that €50 restaurants struggle to match. Full street food guide →
Porchetta Van (Lazio/Umbria/Marche): A three-wheeled Ape car or white van on a roadside, with an ENTIRE roasted pig on the counter. The vendor slices it, stuffs it into a rosetta bread roll, and hands you perfection for €4-5. Best: Any roadside van between Rome and Orvieto. Ariccia (Castelli Romani) — the porchetta capital. Lampredotto Cart (Florence): Lampredotto = cow's fourth stomach, slow-simmered in broth, sliced, put in a bun dipped in the broth + green sauce. €4-5. Florentine workers' lunch since the 1800s. Best: Nerbone (Mercato Centrale, ground floor), L'Antico Trippaio (Piazza de' Cimatori), Da Mario (Via dei Cerchi, near Piazza della Signoria). Yes, it's tripe. No, it doesn't taste how you fear.
Arancini/Arancine Window (Sicily): Every Sicilian bar has a hot counter with arancini (rice balls, fried, filled with ragù or butter+mozzarella or pistachio). €2-3 each. Best: Any bar in Palermo or Catania (Catania makes them cone-shaped, Palermo round — this is a WAR). Panino al Tartufo Van (Umbria/Piedmont, autumn): During truffle season, vans near truffle markets sell panini with truffle cream, truffle sausage, truffle everything. €5-8. Piadina Stand (Romagna): Flatbread folded around prosciutto + squacquerone cheese + rucola. €4-6. Best: Any piadineria in Rimini, Cesena, Forlì — stands on every street corner.
The ultimate Italian food truck experience is a SAGRA — a village food festival celebrating 1 local product. Every village has one. Sagra del Cinghiale (wild boar, Tuscany). Sagra della Porchetta (Ariccia). Sagra del Pesce (Camogli — fish fried in a 4m pan on the beach). Sagra del Tartufo (various, autumn). Find sagre: Search "sagre [region] [month]" or sagreitaliane.it — lists every food festival by date and location. Cost: €10-20 for a full meal at communal tables. The best cultural + food experience in Italy for the price.