Well, now that we have seen each other,” said the unicorn, “if you’ll believe in me, I’ll believe in you.”
Lewis Carroll, Through the Looking-Glass and What Alice Found There

Sponge cake ingredients:
– 3 eggs
– 80g sugar
– 8g Vanilla sugar
– 1 cup flour
– 1tsp baking soda + 1tsp vinegar
Filling ingredients:
– 100g unsalted butter
– 100g sugar
– 200g sour cream
– 1 cup chopped prunes
– 3/4 chopped walnuts
Directions:
1 Sponge cake
1.1 Preheat the oven to 190C
1.2 Combine eggs with sugar and vanilla sugar: whisk well for 3-4 minutes
1.3 Add flour and mix well until smooth, then add baking soda with vinegar in the same teaspoon and mix in
1.4 Pour the batter in the buttered baking form and bake for 20-30 minutes at 190C (test with a wooden stick for readiness) and let it cool down
2 Filling (while cake is being baked)
2.1 Whisk melted butter with sour cream and sugar: put the cream in the fridge for 30 minutes
2.2 Chop walnuts and prunes
3 Final steps
3.1 Spread the filling on the top of sponge cake
3.2 Decorate with chopped walnuts and prunes
3.3 Put the cake in the fridge overnight (or at least 2-3 hours) to let the filling saturate the sponge cake
3.4 Enjoy the cake in the sunny morning with a cup of strong black tea !