Put all ingredients in a bowl and knead into a smooth dough (possibly use a little more water - depends on the consistency of the sourdough). Then cover and let rise for an hour.
Then knead again and place the loaf in a baking pan (you can also form 2 loaves of bread if you like), cover again and leave to rest for an hour.
Preheat the oven to 240 ° C and bake the bread for about 15 minutes, then reduce the temperature to 180 ° C and bake for another 60 minutes, remove from the mold and bake for another 10 minutes.