In a bowl, combine flour, semolina, salt, oregano, half of the fennel seeds and black pepper.
Next, add the olive oil and sourdough starter.
Knead the dough for 5 minutes until smooth and elastic.
Now, roll out the dough between two sheets of baking paper into a rectangle.
{{percentage}}% OFF | CODE: {{code}}
{{/ items}} {{^ items}} {{/ items}}Make sure the dough slab is no more than 2-3 mm thick.
Next, brush the surface with water and sprinkle with the remaining seeds, pressing them down into the dough.
Cut 6 cm x 6 cm (2.5 in x 2.5 in) squares, prick them with a fork, and bake them for 50 minutes at 160 °C (320 °F).
Transfer the crackers onto a rack and leave them to cool down completely and harden.