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WINE-SOURS, TO PRESERVE (a more expeditious method)
Skin and stone the plums, and boil them till soft. Put with them three-quarters of their weight in sugar, and stir them continuously till the syrup will set when a little is put upon a plate. Pour the jam into jars, and cover in the usual way. Store in a cool dry place. Time to boil the plums, three-quarters of an hour without sugar; about a quarter of an hour with sugar.