Dissolve the yeast in the water and pour in the flour.
Begin to knead and add the salt before the total dissolution of the water. Knead vigorously for at least 5 minutes.
Preheat the oven with the stone inside. Then spread a thin layer of dough and prick it with a fork.
Grease the surface and season with coarse salt and rosemary, then bake on a stone.
240 ° C for 4/5 minutes