Cake "Dubrvnik"

Imagine yourself in a breezy summer night. Walking the narrow, stone paved alleyways. Admiring the centuries old houses and castles. And when the feet are to tired to continue the lovely stroll, you find a beautiful, small restaurant. Entering you can't stop to notice a chocolate brown topping on a round cake that looks simply yummy. You order and the super walnut pleasure melts in your mouth...
And if you are somewhat far from Dubrovnik, Croatia, I present one of the best recipes for this cake... Enjoy

INGREDIENTS
8 eggs
250g icing sugar
6 spoons flour
100g chocolate
350g grind walnuts
250g butter
1 cup black tea
1spoon rum
100g grind biscuits
100g sugar
2 spoons juice

Beat 6 yolks with the icing sugar. In another bowl whisk the 6 egg whites until they form peaks.  Mix together the yolks and the egg whites. Mix together the 6 spoons of flour and 50g walnuts and add them to the mixture. Preheat the oven to 200C and bake it in a pan with 26cm diametre. Bake for 20-30 minutes, until it has a brownish - golden color. Let the cake cool, cut the cake in 3 layers, and damp it with the black tea mixed with the rhum  

The topping

Beat the butter for 10min. Add 2eggs and continue beating.  Add the sugar, the biscuits, the walnuts and the juice. Mix all well. Divide the mixture in two. Add melted chocolate to one part. Spread around the first layer the mixture without chocolate. Add the otr=her layer and spread once again with the white mixture. At the last layer spread the  chocolate mixture.