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,
Bolognese sauce done to make it taste even smoother. Artusi recommended serving this sauce with a medium size pasta ("horse teeth") made from durum wheat. The pasta was to be made fresh, cooked until it was firm, and then flavored with the sauce and Parmigiano cheese. In the century-plus since Artusi recorded and subsequently published his recipe for "Maccheroni alla bolognese", what is now "ragù alla bolognese" has evolved with the cuisine of the region. Most notable is the preferred choice of pasta, which today is widely recognized as fresh tagliatelle. Another reflection of the evolution of the cuisine over the past