Pasta tomato sauce, garlic and herbs. In Northern Italy "white sauce" is more common. However Italian cuisine is best identified by individual regions. Pasta dishes with lighter use of tomato are found in Trentino-Alto Adige and Emilia Romagna. In Bologna, the meat-based "Bolognese sauce" incorporates a small amount of tomato concentrate and a green sauce called "pesto" originates from Genoa. In Central Italy, there are sauces such as "tomato sauce", "amatriciana", "arrabbiata" and the egg-based "carbonara". Tomato sauces are also present in Southern Italian cuisine, where they originated. In Southern Italy more complex variations include pasta paired with fresh vegetables, olives,
Pasta e fagioli such as elbow macaroni or ditalini. The base typically includes olive oil, garlic, minced onion, celery, carrots and often stewed tomatoes or tomato paste. Some variations omit tomatoes and instead use a broth base. Preparation may be vegetarian, or contain meat (often bacon or pancetta) or a meat-based stock. The recipe varies greatly based on the region or town in which it is prepared, depending on available ingredients. The consistency of the dish can vary, with some being soupy, while others are much thicker. For instance, in Bari the dish is thicker in consistency and uses mixed pasta shapes. It