The origins of Italian food can be traced as far back as the 4th century BC. The typical cuisine in Ancient Rome included boiled cereals, lentils, chickpeas, legumes, sweet wine, fish, fruits and bread. The spice trade following the Crusades had a tremendous influence on Italian cuisine and brought improvements in flavor and food preservation. During the age of exploration, a number of important foods were added to the Italian diet, including tomatoes from the New World and coffee of Turkish origin. Italian cuisine continued to diversify and expand during the Renaissance. During the 17th, 18th and 19th centuries, aristocrats would consume sumptuous feasts during most social events. Café culture developed shortly after. In the 20th century, Italian cuisine witnessed many changes in food preparation and storage.