Original Receipt in 'The International Jewish Cook' Book by Florence Kreisler Greenbaum, 1919PICKLED PLUMS
Prick the plums with a large needle then weigh them, and to every seven pounds of fruit use four pounds of white sugar, two ounces of stick cinnamon, one ounce of cloves and a pint of best pickling vinegar. Boil the vinegar, sugar and spices, and pour boiling hot over the fruit, which must be packed in a large jar; repeat this three times. While the vinegar boils the third time, pack the plums in glass jars and pour the syrup over the plums. When cold seal.