Some basic sauces are workhorses, not dainty plate dressings — for instance, the sturdy flour-thickened white sauce known in ...
Delia' shows you how to make béchamel sauce ... the sauce very aromatic and distinguishes this sauce from a plain white sauce, which might have cheese or other flavourings added to it.
Delia' shows you how to make béchamel sauce, using a mixture of butter and flour called a roux. A béchamel sauce is one of the French "mother sauces" and is a really good one to learn.