Place the whites on a flat dish, being careful that not a particle of the yolk gets in. Add a pinch of salt, and with a daisy beater held flat whip the whites with an upward motion to a stiff, dry froth. It will take but a very few minutes if the eggs are fresh and cold. Put the yolks in an earthen bowl, and with a wooden or silver spoon beat them until a lemon color. If sugar is used add it at this time, and stir until the whole becomes light and creamy.