Quick, Small, Simple Sponge Cake

Separate the eggs - beat the snow - add sugar and a pinch of salt and continue stirring until the snow is nice and stiff - TIP: if you stir the yolks well with 2 tablespoons of the snow and lift this well-mixed mixture under the snow, leave it mix it quickly and perfectly without everything collapsing again - finally mix the flour with the tartar baking powder and carefully fold in - bake at 180 degrees O / U for about 12-15 minutes

Place the biscuit upside down on a fresh sheet of baking paper sprinkled with sugar - peel the old baking paper off the roulade and roll the roulade with the fresh baking paper while it is still hot - let it cool a little - then roll it up carefully and immediately with jam Brush - roll up again and, for serving, sprinkle the roulade with a little sugar