White Sauce, also known as Béchamel, is a classic French sauce made from a simple mixture of butter, flour, and milk. It serves as a base for many other sauces and dishes, providing a creamy texture and mild flavor. The sauce is typically prepared by melting butter, whisking in flour to create a roux, and then gradually adding milk while stirring until it thickens. White sauce is commonly used in various recipes, including lasagna, macaroni and cheese, and creamy soups. It can be seasoned with salt, pepper, and nutmeg to enhance its taste. Additionally, it can be transformed into other sauces, such as Mornay sauce by adding cheese.