This section is from the book "The Complete Cook", by J. M. Sanderson. Also available from Amazon: The Complete Cook.
Take the filtered juice of fruits, as for jelly (see Jellies); to each pint of juice add one pound of loaf sugar, dissolve it in the juice thoroughly, place it on the fire and heat it, but it must not boil; put it into small pots, moulds, or glasses, so as to form cakes about half an inch thick; place them on the stove, which must not be too hot, or they will melt instead of forming a jelly; about seventy-five or eighty degrees Fahrenheit is quite hot enough. When a crust has formed on the top, take out the cakes by carefully turning the knife round the sides of the pot, place them on small plates of tin or pewter, and dry on the other side. When dry they can be cut into diamonds, squares, or any shape you please. These are certainly some of the most delicate and beautiful cf this class which were ever invented, fit even to gratify the palate of the most fastidious. The fruit from which they are made should be gathered as fresh as it possibly can, except apples, as the mucilage is injured by keeping, and if the fruit has fermented it is entirely destroyed.
 
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