Bring to a boil 1 glass rosewater and 1 lb sugar. Cool slightly. Dissolve 1 dessertspoon potash in water, mix with the rosewater syrup, and sprinkle on 1 lb flour. Beat thoroughly with a spatula, cover tightly, and set in the oven overnight. Roll out the next morning, let the dough rise, and bake in an oven that is not too hot.