Heat the oven at 230 degrees Celsius and put your dutch oven in it for about half a hour. You’ll want the dutch oven to get really hot.
After a half a hour has passed, turn the dough out on baking paper and score it with a razor or knife. The scoring will allow steam to escape from the dough while it’s baking. If you neglect to score your bread, it could burst anywhere it likes and that might not look too pretty!
Next put the dough on the baking paper in the hot dutch oven and put the lid back on.
Bake the bread for 25 minutes with the lid on the dutch oven. After that, lower the oven temperature to 210 degrees Celsius and take the lid off. Now bake for another 25 minutes.
An extra step that you could take to make sure that the bottom of the bread has been baked off fully is to put the bread upside down in the oven (without the dutch oven) and to bake it for another 5-10 minutes.
After you’ve finished baking the bread you should be able to hear a hollow sound when you tap the bottom of the bread. Make sure to cool the bread down on a cookie rack for example. You want the bread to be fully cooled down before you start slicing it! If you neglect to do this it could end up a bit moist on the inside.