Knead the dough ingredients together and roll out the dough on a greased pan that has been dusted with flour.
Spread the berries on top.
Beat the eggs with the sugar for the topping until frothy. Whisk the remaining ingredients together and use a whisk to fold them into the egg cream. Pour the icing evenly over the berries.
Bake the cake in the oven preheated to 175 ° for about 40 minutes!