Mix the dough
In a large bowl, combine spelt flour, rye flour, salt, and yeast. If using honey or oil, add it now. Gradually pour in the water while mixing with a spoon or your hand until a sticky dough forms.
First rise (bulk fermentation)
Cover the bowl with a damp towel or plastic wrap. Let rise at room temperature for 8â12 hours, preferably overnight. The dough should double and show bubbles.
Preheat oven
Preheat to 240°C (460°F). Place a baking stone or an inverted baking tray inside. Put a small oven-safe dish with water at the bottom for steam.
Shape the BĂŒrli
Heavily flour your work surface. Gently turn out the dough. DO NOT knead. With floured hands or a bench scraper, cut into 6â8 rough pieces (they donât need to be perfect â rustic is good!).
Bake
Place the rolls on parchment paper or directly on the hot tray/stone. Bake for 20â25 minutes, until crusty and golden brown. Let cool on a wire rack.
â Tips
For a crustier roll, increase steam in the first 10 minutes (spray water into oven or add more water to the steam tray).
The dough is very sticky â use plenty of flour and quick hands when shaping.
Use more rye for a denser, more sour flavor; more spelt for a lighter texture.