This section is from the book "The American Garden Vol. XI", by L. H. Bailey. Also available from Amazon: American Horticultural Society A to Z Encyclopedia of Garden Plants.
Housekeepers who have many tomatoes can easily preserve a large quantity of this very easily-cultivated fruit by drying it. This method requires little outlay, and comparatively little trouble. Scald and peel the tomatoes, as for canning. Boil them slowly in a porcelain kettle or stone jar until the original quantity is reduced one-half. Then season them in the proportion of a teaspoonful of salt, and half-a-cupful of sugar to a gallon of stewed tomatoes. Spread on plates and dry quickly without scorching. As the moisture dries away, and the stewed fruit loses shape, scrape it up so that both sides may dry, and let the contents of several plates, heaped up lightly, stand in bright sunshine a little while before putting away. Store in bags and keep dry. When wanted for use soak them in a quantity of water for several hours, or over night. Stew in same water long and slowly - three or four hours - keeping boiling water at hand to add if it grows thick, and so is in danger of burning. It should be quite thin when done, and may be thickened with bread crumbs and seasoned.
 
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