For the bunch, mix 500 g flour, 75 g sugar and 1 pinch of salt in a large bowl. Add the egg and 100 g softened butter. 1⁄4 l Warm up lukewarm milk, crumble yeast into it and dissolve in it.
Pour yeast milk into the flour mixture. Knead everything into a smooth dough with the dough hooks of the mixer. Cover the dough and let it rise in a warm place for about 45 minutes.
Knead yeast dough well on a floured work surface. Form 8 dumplings, place in a greased baking dish and leave to rise for a further 30 minutes.
l milk, 2 tablespoons sugar and 50 g butter lukewarm warm, pour over the yeast dumplings. Bake in the preheated oven (electric cooker: 200 °C/circulating air: 175 °C/gas: see manufacturer) for approx. 30 minutes. Cover the dumplings with aluminium foil after about 15 minutes.
For the lilac berry soup in the meantime peel apples, quarter them, remove seeds and cut them into slices. Boil up elderberry juice, 1 l water, 75 g sugar, cinnamon and lemon peel. Stir starch with 3-4 tbsp. water until smooth.
Pour into the boiling juice while stirring, bring to the boil. Add apples and simmer for about 2 minutes while stirring. Sprinkle the cakes with icing sugar and serve immediately with the hot lilac berry soup.