From 1917: Use good sized prunes and place them in a baking pan, side by side so that they hardly touch each other; cover over with water and put in oven (not too hot) for one hour, pour off three-quarters of the juice (use this for a beverage), add a little sugar to suit taste, a stick of cinnamon and the rind of one lemon; cover pan tightly and place back to moderate oven and bake for at least one hour.