Sofrito is heavily emphasized as the third critical component in a "sofregit" base along with tomatoes and onions. Garlic is optional, as it is not considered an integral part of the standard "sofregit" recipe. Some "sofregit" recipes do not contain tomatoes at all, but are made more complex with the addition of diced vegetables such as leeks or bell peppers. In Italian cuisine, chopped onions, carrots and celery is battuto, and then, slowly cooked in olive oil, becomes "soffritto". It is used as the base for most pasta sauces, such as arrabbiata sauce, but occasionally it can be used as the
Bolognese sauce types of minced or finely chopped beef, often alongside small amounts of fatty pork. White wine, milk, and a small amount of tomato concentrate or tomatoes are added, and the dish is then gently simmered at length to produce a thick sauce. The earliest documented recipe of an Italian meat-based sauce ("ragù") served with pasta comes from late 18th century Imola, near Bologna. A recipe for a meat sauce for pasta that is specifically described as being "bolognese" appeared in Pellegrino Artusi's cookbook of 1891. The "ragù alla bolognese" that is now traditionally associated with tagliatelle and lasagne is somewhat