Peel the pumpkin (Hokkaido does not need to be peeled), cut it into small pieces and boil it with a little water to make a sauce. Measure 500 g.
Finely grind the wheat and rye. Mix the yeast with water and a little flour to a thick paste and let it rest for 10 minutes.
Mix all ingredients together and finally knead in the yeast mixture. After a kneading time of 12-15 minutes, place the dough in a bowl, dust with flour and cover. Let go for 45 minutes.
Then knead the dough again briefly and vigorously, divide and form two round loaves of bread. Let rise on a tray for 15 minutes. Preheat the oven. Make a cut into the bread before pushing it in and, if necessary, brush it with egg yolk.
Bake at 200 ° C for about 20 minutes, then for another 15 minutes at 150 ° C. Allow to cool on a grill. And then let it taste with butter.