Preheat the oven to 200 degrees.

Line the baking sheet with baking paper.

For the batter, separate the eggs. Beat the egg whites until stiff, pour in the salt and sugar. Fold in the egg yolks. Stir in flour with baking powder. Spread the dough about 1 cm high on the baking sheet and bake in the oven for 8-10 minutes.

Heat biscuit on a damp kitchen towel, carefully peel off baking paper. Wrap the sheet of dough and allow to cool.

Whip the cream, cream stiffener and sugar until stiff, add the Kaba. Roll up the sponge cake, fill it with the help of the cloth and cover it with cream.