The day before, mix 200 g of whole spelt flour with 100 g of ready-made sourdough, salt and 200 ml of water. Stir well and let rise overnight.
The other day, knead in the soy curd and the remaining flour.
Cover and let rise for 1 - 2 hours.
Then, on a floured surface, knead the dough again briefly and then stretch and fold it 2 times and shape it round.
Finally, shape into an oblong shape for a loaf pan.
Line the loaf pan with baking paper and pour in the batter.
Cover and let rise for another 30 minutes.
In the meantime, preheat the oven to 220 degrees celsius top/bottom heat.
Cut the top of the dough a few times and brush with water.
Bake in the oven for about 50 minutes. After 10 minutes, turn down to 200 degrees celsius and after another 15 minutes, turn down to 180 degrees and finish baking.
When the bread is out of the oven, brush it again with cold water.