That depends on who’s talking. Many people refer to Alfredo as “white sauce” but technically white sauce refers to a béchamel, which is a simple French sauce base made with butter, flour, milk, salt, and pepper. A béchamel is often used as a base to create other sauces, like the cheese sauce in many macaroni and cheese recipes. Alfredo sauce does not include flour and is a finished sauce rather than a base.