Put 5 ozs. of butter in a basin, with sufficient flour to make a dough, a little water, and a good pinch of salt. Work to a stiff dough. Roll out on a floured board somewhat thinly, and cut into lengths, as when making cheese straws. Brush over with yolk of egg, sprinkle with salt and caraway seed, and bake in a moderate oven till lightly browned.