Breakfast, to Italians, can be either a coffee (or a caffelatte, or even just a glass of milk) when at home, or a cappuccino and cornetto eaten standing at the bar.  You won't find anything more substantial and even in many hotels, breakfast will be "continental".  If sweet food isn't your thing, consider popping into a "pizzeria al taglio" for a fresh slice of pizza.

If you are near the Pantheon, visit Tazza d'Oro (golden cup), arguably one of the best coffee houses in Rome. Go to the cashier first to pay.  You will be given a receipt.  Take the receipt to the counter (there are no seats) and place your order.  The selection is simple - cappuccino or caffè (what Americans erroneously call espresso) and a cornetto, a sweet roll that is either plain or filled with cream, chocolate or jam. 

Over the years, s dramatic change in the bars located in the city centre to appease tourists is that cappuccino is now served throughout the day, rather than only until noon - as Italians consider it a morning drink.  For those who desire a cold coffee fix, order a granita di caffè, alternating layers of whipped cream and shaved coffee ice.