Place the yolk of an egg in a small bowl and add
- Three tablespoons of pulverized sugar,
- Two tablespoons of lemon juice,
- One-half cup of ice-cold water.
Beat to mix and then pour into tall thin glasses and add stiffly beaten white of egg, folding in carefully. Add four tablespoons of crushed ice and fill the glass with carbonated water. Orange juice may be used in place of the lemon juice.