Make Ahead Tip: Store in an airtight container in the refrigerator for up to 2 months. For longer storage, process in a boiling-water bath (for detailed instructions, refer to www.homecanning.com or call the Home Canner's Hotline at 800-240-3340).
To test the consistency of the spread: Drop a dollop of cooked spread onto a chilled plate. Carefully run your finger through the dollop. If the track remains unfilled, the jam is done.