Sieve the flour
Dissolve yeast and add to a quarter of the flour.
Make a cross in this dough ball and put it in a bowl of lukewarm water.
Now make a dyke of the remaining flower. Fill the void with the eggs, sugar and salt.
Knead this into a dough.
When the yeast ball floats on top, drain and mix with the dough.
Place the ball on a greased foil paper in a warm place with a damp cloth and let it rise.
Knead in the butter after 1 - 1½ hours.
Let it cool down
Preheat the oven to 190 ° C and bake in 15 to 17 minutes.