information:extraction, structural:summarization
Cuisine

Ancient Roman cuisine changed over the long duration of this ancient civilisation. Dietary habits were affected by the influence of Greek culture, the political changes from Kingdom to Republic to Empire, and the Empire's enormous expansion, which exposed Romans to many new, provincial culinary habits and cooking techniques. In the beginning the differences between social classes were relatively small, but disparities evolved with the Empire's growth. Men and women drank wine with their meals.

The ancient Roman diet included many items that are staples of modern Italian cooking. Pliny the Elder discussed more than 30 varieties of olive, 40 kinds of pear, figs (native and imported from Africa and the eastern provinces), and a wide variety of vegetables, including carrots (of different colours, but not orange) as well as celery, garlic, some flower bulbs, cabbage and other brassicas (such as kale and broccoli), lettuce, endive, onion, leek, asparagus, radishes, turnips, parsnips, beets, green peas, chard, cardoons, olives, and cucumber.

However, some foods now considered characteristic of modern Italian cuisine were not used. In particular, spinach and eggplant (aubergine) were introduced later from the Arab world, and tomatoes, potatoes, capsicum peppers, and maize (the modern source of polenta) only appeared in Europe following the discovery of the New World and the Columbian Exchange. The Romans knew of rice, but it was very rarely available to them. There were also few citrus fruits.

Butcher's meat such as beef was an uncommon luxury. The most popular meat was pork, especially sausages. Fish was more common than meat, with a sophisticated aquaculture and large-scale industries devoted to oyster farming. The Romans also engaged in snail farming and oak grub farming. Some fish were greatly esteemed and fetched high prices, such as mullet raised in the fishery at Cosa, and "elaborate means were invented to assure its freshness".

Traditionally, a breakfast called ientaculum was served at dawn. At mid-day to early afternoon, Romans ate cena, the main meal of the day, and at nightfall a light supper called vesperna. With the increased importation of foreign foods, the cena grew larger in size and included a wider range of foods. Thus, it gradually shifted to the evening, while the vesperna was abandoned completely over the course of the years. The mid-day meal prandium became a light meal to hold one over until cena.