Mix the flour with the yeast and milk in a bowl. Mix in sugar, salt, eggs, egg yolks and crème fraiche and work into a smooth dough. Cover and let rise in a warm place for 1 hour.
Knead the dough again. Grease the loaf pan and sprinkle with the breadcrumbs. Pour the dough into the mold, smooth it out and let rise for another hour.
Preheat the oven to 175 ° C.
Use a knife to cut into the length of the dough approx. 1 cm deep and brush with water. Bake on the second shelf from the bottom for about 40 minutes.
Remove from the tin after baking and let cool on a wire rack / wire rack.