Recipes from The Inglenook Cookbook by The Sisters of the Brethren Church (1906)
PRESERVING AND CANNING
CANNED PLUMS
To every pound of plums allow 1/4 pound of sugar. Put the sugar and plums alternately into the preserving kettle, first pricking the plums to prevent their breaking. Then put them over a moderate fire and let come to a boil. Skim and pour at once into jars, running a silver spoon handle around the inside of the jar to break the air bubbles. Cover and screw down the tops.