Combine flour, water and sourdough or yeast. If you want the dough to rise faster, you can use 1 package dry yeast and let it rise an hour only. Roughly chop tomatoes and olives and add them to the dough, together with salt. Knead into a smooth dough.
Let the dough rise for 12 hours or overnight. Preheat the oven to 220 °C and put an oven-proof bowl filled with water on the bottom of the oven. Carefully shape the dough into a baguette and bake for approx. 25 minutes until golden and crunchy.
Tipps
You can also shape the dough into mini-baguettes or buns.