
Knead on a slow speed for 10-15 minutes until smooth, shiny and elastic - add more tepid water if necessary. Transfer to a lightly oiled bowl, then cover with a damp tea towel and leave to prove in a warm place for 2 hours or until doubled in size.
Scatter a little polenta over the base of the hot baking tray and transfer the stretched piece of dough. Use a sharp knife or a pizza cutter to mark narrowly spaced parallel lines along the length of the dough. Brush with melted butter and sprinkle with the seeds of your choice.
Bake for 6-7 minutes, until slightly risen and a rich golden brown. Transfer the cooked loaf to a wooden board and cover with a clean tea towel. While the bread is baking, prepare the next loaf. Continue with the remaining balls of dough.
This recipe is from the magnificent book Saraban: a chef's journey through Persia.