For the cake, grease a springform pan (26 cm Ø) and dust with flour. Melt butter. Mix semolina, flour and baking powder. Mix sour cream, sugar and 1 packet of vanilla sugar. Stir in the melted butter and the semolina mixture.
Leave to soak for about 15 minutes.
Whisk the semolina mixture again with the whisks of the mixer for 2-3 minutes and spread into the springform pan. Bake in the preheated oven (electric cooker: 175 °C/circulating air: 150 °C/gas: see manufacturer) for approx. 45 minutes.
Mix caramel syrup and orange juice. Take out the cake and prick several times with a wooden skewer. Drizzle the syrup over the cake while it is still hot. Let it cool down in the mould.
For the strawberry sauce wash, clean and chop the strawberries. Puree half the strawberries and 1 packet of vanilla sugar. Remove the cake from the tin. Serve with strawberry sauce and the rest strawberries.