What is alfredo sos?

Alfredo sauce is a creamy pasta sauce made with butter, heavy cream, and Parmesan cheese. It is a popular sauce in Italian cuisine and is traditionally served with fettuccine noodles. The sauce was named after Alfredo di Lelio, an Italian restaurant owner who created the dish in the early 20th century. Today, there are many variations of Alfredo sauce, including ones with added garlic, mushrooms, and other ingredients. Alfredo sauce can also be used as a pizza topping or as a dip for breadsticks.