Bring the sour cream, cloves, cinnamon sticks, vanilla sugar, raisins and grated lemon zest to a gentle boil in a saucepan, stirring continuously. If the cream still flocculates as it heats, continue stirring until the mixture binds repeatedly. Add the apple, peeled, cored and cut into small cubes.
Bring to the boil again and slowly pour in the semolina. Stir until a creamy, firm mixture is obtained. Leave to cool.
As the last step, fold in the whipped sweet cream and cut out dumplings with a tablespoon.
Depending on the season, garnish with fresh fruits or berries of the season. Also boiled dried fruits harmonize with the cream dumplings.