Combine sugar, corn syrup and water in a saucepan. Bring to a boil.
Reduce heat and cook syrup to hard-ball stage (250-265-degrees F.).
While syrup is cooking, beat egg whites until stiff peaks form. Pour
syrup slowly into egg whites, beating constantly until candy loses its
gloss and holds shape. Immediately fold in vanilla and walnuts. Drop by
spoonfuls onto a waxed paper covered tray.
Yield: 18 pieces.