Canning, Preserving and Jelly Making

How your great-grandmother filled the cellar every autumn: the 1915 standard guide to canning, preserving, pickling and jelly making.

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Effects of Cooking Fruit with Sugar

The addition of sugar to cooked fruit increases the nutritive value of the fruit, while the cooking of the sugar at a high temperature, in conjunction with the acid in the fruit, brings about the inversion of the sugar, which is the first step in its digestion. It is for this reason that jams and marmalades are thought to be one of the most wholesome forms in which sugar may be presented in food.

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