The Savoy cake is one of the oldest French biscuits, dating back to the 14th century and the court of the Count of Savoy. Without any fat, it relies entirely on the incorporation of air through beaten egg whites, which gives it its characteristic fluffy texture. Its success depends on the delicacy of the mixing and respecting the baking process: do not open the oven at the beginning of baking or it will collapse. A zest of lemon is enough to flavor it.
Its fluffy texture comes solely from the beaten egg whites: it contains no fat. The delicate folding of the whites and baking without opening the oven at the start are crucial.
The quantities and detailed steps are provided in the recipe sheet on this page.