I just found a jar of St. Dalfour Wild Blueberry 100 % fruit spread that had migrated to the back of the pantry closet. To my horror, the date on the top of the jar is 03/16/2007. Of course it is unopened --- but is it terminally outdated, or might it still be okay to use? No 1-800 number on it, so I'm relying on the expertise of chowhounds. Thanks.