(diameter 14cm, weight approx. 1,500g)
Sponge cake
4 eggs
160g sugar
120g wheat flour
40g potato flour
Blueberry cream
220g dark berries filling 35% Lauretta
230g whipping cream (36% fat content)
200g mascarpone cheese
Cream for decorating
200g butter (at room temperature)
50ml milk
50g sugar
90g milk powder
liquid food colouring - violet
Additionally
150g Lauretta dark berries 35%
Approx. 100ml water with a quarter of a lemon added (to soak the sponge cake)