Bring 3/4 liter of milk to the boil. Stir in the rice pudding and 2 tablespoons of sugar and simmer for about 30 minutes.
Pick and wash fresh blueberries.
Mix the custard powder with the remaining sugar and 1/8 l milk. Stir the mixed pudding powder into the rice pudding, let the rice swell for 5-10 minutes. Stir in the rest of the milk and blueberries and briefly heat in the rice pudding.
Tip: You can also use apple slices instead of the berries; Put the rice in a baking dish, cover with apples, sprinkle with vanilla sugar and bake for 30 minutes at 200 °.