Kasey is teaching her students how to make béchamel sauce. Which of the following statements is she likely to make?

Béchamel sauce is the most complex of all the sauces to make

It is a recent invention

It is made by thickening hot milk with a white roux

It can take up to an hour to make the perfect sauce

Many people also like to make it into a demi-glace as a topping for their meat.