Michel Guérard’s Nouvelle Tomato Béarnaise Sauce

Delicious as these emulsion sauces are, calorie-conscious readers often ask whether there is a way of making them with less saturated fat.

Michel Guérard was the first great chef to address the area of healthy eating, with low-calorie gourmet food at his hotel attached to the health spa at Eugénie-les-Bains in South-west France, and this is his diet version of béarnaise sauce.