Heat deep fat to 375. Beat egg yolks, egg and salt together until very stiff (a bout 10 min). Blend in confectioners' sugar and flavorings thoroughly. Add flou r all at once; mix well. Turn dough onto well floured cloth-covered board; knea d until surface of dough is blistered in appearance (about 7 min.) Divide dough in halves and roll out each half VERY THIN. With pastry wheel or knife, cut do ugh into diamonds or rectangles about 4x2 inch. Make a 3 cm slit in center of each; d raw a long point of diamond through slit and curl back in opposite direction. F ry until delicately browned in deep hot fat about half min. on each side. Turn q uickly and brown other side. Drain on absorbent paper. Sprinkle with confection ers' sugar just before serving.