Lightly crumble the yeast between your fingers and mix with the water. Add whole wheat flour, e.g. pumpkin seeds, salt and vinegar and mix to a dough.
Grease a bread pan with butter and pour the dough into it. Brush with warm water and sprinkle as desired.
Bake the bread in the oven for about 1 hour at 200 °C top and bottom heat.
Remove from the oven, take out of the mold and let cool.
Preparation Tip:
The bread will be especially beautiful if you also sprinkle the mold with pumpkin seeds.