This section is from the book "Three Meals A Day", by Maud C. Cooke. Also available from Amazon: Three Meals a Day.
Strawberry, raspberry, currant, pine-apple, all kinds of fruit water ices may be made in about the same way. - 1 quart of water to 1½ pints of the fruit juice; sweeten to the taste and acidity of the fruit. Put in a freezer and when partly congealed add the beaten whites of 2 or three eggs to each quart of the mixture; then finish freezing. This will be found a good general rule for all manner of fruit water ices.
1 cupful lemon juice. 4 cupfuls water.
2 cupfuls sugar.
When partly frozen add the whites of 2 eggs beaten to a froth and finish freezing.
 
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