Sugarfree strawberry vanilla cake

The most important thing about this cake is that it was made for my dear Granny's 80th birthday :) Apart from the optional 2 packets of vanilla sugar, it is totally sugarfree, except for the ladyfingers but you can leave those out.

Ingredients for the sponge cake:

• 6 eggs
• 5 tablespoons of flour
• 4 tablespoons of xylitol
• 1 teaspoon of vanilla flavour

Ingredients for the cream:

•  half a litre of milk
•  2 packets of vanilla custard powder
• 10 dkgs of butter
• 2.5 dl of cream
• 1 vanilla fruit
• zest and juice of one lemon
• half a kg of fresh strawberries
• 3 tablespoons of diabetic strawberry jam
• xylitol and liquid sweetener according to taste

Separate the yolks from the whites and beat the whites up with the xylitol. Mix the vanilla extract with the yolks and add the mixture to the whites. Sift the flour into the mixture and give it a good but careful stir. Lay parchment paper in a cake ring and spread the dough into the ring, bake it at 160deg Celsius for about 20 minutes. 

Prepare the vanilla custard with the milk and let it cool down. With an electric beater whisk in the melted butter, the lemon zest, the lemon juice and the inside of the vanilla beans. When it's all in, you have to add the cream and keep whisking until you get a smoothe cream. Cut the sponge cake in two, and lay the bottom half back in the bottom of the cake ring. Spread a little bit of the cream on the sponge cake and cover it with the sliced strawberries. Save some of the cream for the decoration, the rest you can spread on top of the strawberries, and then cover the top of the cream again with strawberries. Spread some jam on the other half of the sponge cake and put it on top of the cream and strawberries. Put the cake in the fridge for the night. The next day you can just spread the rest of the cream all over the cake. Also you have to cover one side of the ladyfingers with the cream and push them into the coconut flakes. Stick the ladyfingers on the outside of the cake. Put some strawberries on top and cover it with red jelly.