Doppio Zeroo in Rome's Ostiense district is the all-day pizza-and-aperitivo room with a long deli counter, the city's most generous aperitivo bar at 19:00 and a craft beer list.
Signature dishes: Pizza al taglio, Aperitivo, Tasting plates
Must order: The aperitivo buffet from 19:00 with a glass of Lazio white, plus slices of pizza al taglio.
Tip: Open daily 07:00 to 02:00. The 19:00 aperitivo is the value entry; book the rooftop in summer.
Address: Via Ostiense 68, 00154 Roma, Rome
Trattoria Dal Cavalier Gino in Rome's Centro Storico is the politicians' lunch room near the Parliament, with frescoed walls and the coniglio alla cacciatora the unmissable secondo.
Signature: Tonnarelli cacio e pepe, Coniglio alla cacciatora, Saltimbocca
Order: The tonnarelli cacio e pepe, coniglio alla cacciatora, and a half-litre of house Frascati.
Tip: Closed Sunday. Book a week ahead; the back-room frescoed alcoves are the ask.
Antica Pesa in Rome's Trastevere is the 1922-founded trattoria with a hidden walled garden, the celebrity-spot lunch room and the cacio e pepe that critics have argued over for decades.
Signature: Cacio e pepe, Tagliata di manzo, Carciofi alla giudia
Order: Cacio e pepe, tagliata di manzo, and the carciofi alla giudia in season.
Tip: Book the walled garden three weeks ahead for May to September. Closed Sunday all day.
Gabriele Bonci's Pizzarium near the Vatican in Rome is the pizza al taglio counter that re-wrote how the city does slices, with toppings that rotate every two hours.
Signature: Pizza bianca, Pizza al taglio with mortadella, Suppli
Order: Pizza bianca with mortadella, the potato slice with rosemary, a suppli on the side.
Tip: Open from 11:00 daily; line moves fast. Slices are sold by weight. Eat standing or take to nearby park.
Pizzeria Da Remo in Rome's Testaccio is the classic Roman pizza room with paper-thin crusts, the city's busiest suppli counter and a queue that wraps the piazza nightly.
Signature: Roman pizza, Suppli, Bruschetta
Order: Roman pizza margherita, suppli al telefono, and the bruschetta with anchovies.
Tip: Cash only. No bookings; arrive 19:00 or after 22:00 to skip the queue. Closed Sunday.
Li Rioni in Rome's Celio district near the Colosseum runs the canonical wood-fire Roman pizza with paper-thin crusts and the city's best fiori di zucca fritters since 1988.
Signature: Roman pizza, Suppli, Fiori di zucca
Order: Pizza alla romana, fiori di zucca and a suppli al telefono.
Tip: Closed Tuesday all day. The terrace tables on Via dei Santi Quattro book a week ahead.
Stefano Callegari's Trapizzino in Rome's Trastevere invented the namesake triangle of pizza bianca stuffed with Roman braises since 2008. Now a small Rome chain with five locations.
Signature: Trapizzino, Suppli, Pollo alla cacciatora
Order: Trapizzino with pollo alla cacciatora and another with melanzane alla parmigiana.
Tip: Open 12:00 to 24:00 daily; the Piazza Trilussa location is the original of the brand.
