In a clean mixer with the whisk attachment place the egg whites and beat until soft peaks are formed, finally fold the whisked egg whites gradually to the cake mixture
Pour the mixture into the prepared trays (please note this cake will not rise as there is no baking powder, so don't fill it 3/4, fill it to the top)
Bake in the preheated oven for 2h - 2 hours and 30 minutes until it is cookedAll ovens are different if the top of the cake looks like it is getting brown too much after 1 hour, cover the top with foil and return to the oven. Once fully baked, While it is hot brush barndy on the top using a brush. Leave the cake in the pan until cooled down
Once cooled take it off the tray, store it in a tightly wrapped container and every 2 days brush it with brandy
When you are ready to wrap the cake, brush it with brandy and add a layer of marzipan on the top ( Roll out the marzipan to 1mm-2mm thickness) Cut the cake into square pieces (45mmx45mm) and wrap it with tissue paper and wrapping paper straight away.