is a key ingredient in many  lasagna  recipes [ citation needed ] Béchamel sauce  ( English:  /bɛʃəˈmɛl, beɪʃəˈmɛl/ [ 1 ]   French:  [beʃamɛl] ,  Italian :  besciamella   [beʃʃaˈmɛlla] ), also known as white sauce , is one of the  mother sauces  of  French cuisine  and is used in many