Mix the lukewarm water with the lukewarm milk. Add sugar and crumbled yeast.
Put the flour in a large bowl and add the salt, softened butter and egg. Then pour the water-yeast mixture over it and knead everything well. If the dough is still sticky after kneading, add a little flour.
Cover the dough with a damp cloth and let rise for about 1 hour.
Then shape nice round buns out of it. Each one weighs approx. 130 g. Flatten the buns a little on the baking paper so that they rise evenly.
Cover the buns again with a damp cloth and let rise for another half an hour.
To brush the egg and milk, whisk together and brush the buns with it. Sprinkle evenly with a little sesame seeds and place the baking sheet on the middle rack in the oven at 200 ° C top / bottom heat for approx. 18 minutes.