Mix in the order given. Use enough flour to roll the dough thin. Cut it into circles, and bake in a moderate oven. Brush the tops with white of egg, and sprinkle them with sugar. Caraway seeds may be mixed with the dough, or sprinkled over the tops if liked. For soft cookies do not roll the dough so thin. Stamp them out with a fluted cutter, and remove them from the oven as soon as baked, not leaving them to dry as for crisp cookies.