Pasta Sauce
Pasta is generally served with some type of sauce; the sauce and the type of pasta are usually matched based on consistency and ease of eating. Northern Italian cooking uses less 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 tomato sauces 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, arrabiata and the egg based carbonara. In Tuscany and Umbria pasta is usually served alla carrettiara. (a tomato sauce spiked with peperoncini hot peppers).
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, capers or seafood. Varieties include puttanesca, pasta alla norma (tomatoes, eggplant and fresh or baked cheese), pasta con le sarde (fresh sardines, pine nuts, fennel and olive oil), spaghetti aglio, olio e peperoncino (literally with garlic, olive oil and hot chili peppers).
Fettuccine alfredo with cream, cheese and butter, and spaghetti with tomato sauce (with or without meat) are popular Italian-style dishes in the United States and Canada.