Béchamel is a mixture of flour and butter that has been cooked together (also called a roux) and milk with just a bit of seasoning. It's often called a "mother sauce" because it is a sauce used to make other sauces. Béchamel sauce is also an essential part of so many amazing dishes, like lasagna, and mac and cheese! Our garlic parmesan sauce is made from a béchamel sauce. It's somewhat thick and clings to food the way you would want a sauce to.