For the cream, put everything in the mixing bowl, stir 6.5 min / 90 ° C / speed 2. Then transfer and cover the surface of the cream with cling film.
For the dough, put everything in the mixing bowl and knead the dough for 2 minutes / level. Pour into a bowl and let rise in a warm place for 30 minutes.
In the meantime, peel and core the apple and cut into small pieces. Stir 70 g of sour cream into the cream.
Roll out the yeast dough into a rectangle (30 x 40 cm). Spread the cream thickly on it, leaving a wide margin. Put the apple pieces on the cream. Brush the edge with 10 g sour cream. Fold the broad side of the dough inwards. Roll in from the longer side. Use a large saw knife to cut the roll into snails 2-3 cm thick, making approx. 15 pieces.
Place the snails on two baking sheets lined with baking paper and let rise for another 20 minutes. Bake in the preheated oven at 175 ° C for about 15 minutes. Dust with icing sugar while it is still warm.
Note: This is a self-developed recipe. A snail has 220 kcal, 6 g protein, 5.5 g fat and 33 g carbohydrates.