Soda Syrup
Mix three pounds of granulated sugar and one and one half ounces of tartaric acid. Stir until dissolved in one quart of hot water. Beat the whites of three eggs and add to the syrup when it is thoroughly cold. Stir well and pour into bottles. To serve, add two tablespoonfuls of the mixture to a glass of water, and stir in a quarter of a teaspoonful of bicarbonate of soda.