Beat eggs, sugar, vanilla sugar and salt to a thick, creamy mass. The sugar should have dissolved in the process. Sift the flour into a bowl, mix with the baking powder and almonds, add to the egg mixture and fold in. Then stir in the oil and then the mineral water, distribute the dough on the tray, smooth it out and slide it into the oven on the 2nd rail from below. The baking time is 25 - 30 minutes. Make a wooden stick test. No more dough should stick to it when it is pulled out. After removing the cake, let it cool down on the baking sheet.