And fat; French cuisine in particular involves the liberal use of butter, especially in sauces. "Mounting" a sauce amounts to stirring in a big knob of butter a

And fat; French cuisine in particular involves the liberal use of butter, especially in sauces. "Mounting" a sauce amounts to stirring in a big knob of butter at the end. Bearnaise sauce for steaks is about 70% butter. There's a reason for this; they make food taste good.