In 16th century Naples a Galette flatbread was referred to as a pizza. A dish of the poor people, it was sold in the street and was not considered a kitchen recipe for a long time. This was later replaced by oil, tomatoes (after Europeans came into contact with the Americas) or fish. In 1843, Alexandre Dumas, père described the diversity of pizza toppings. An oft-recounted story holds that in June 1889, to honour the Queen consort of Italy, Margherita of Savoy, the Neapolitan pizzamaker Raffaele Esposito created the "Pizza Margherita," a pizza garnished with tomatoes, mozzarella cheese, and basil, to represent the colors of the Italian flag.
Pizza is now a type of bread and tomato dish, often served with cheese. However, until the late nineteenth or early twentieth century, the dish was sweet, not savory, and earlier versions which were savory more resembled the flat breads now known as schiacciata. Pellegrino Artusi's classic early twentieth century cookbook, La Scienza in cucina e l'Arte di mangiar bene gives three recipes for pizza, all of which are sweet. However, by 1927, Ada Boni's collection of regional cooking includes a recipe using tomatoes and mozzarella.