how long is jelly good for
Q: How long can I keep my homemade jams and jellies once I open them? A: Opened home-canned jams and jellies should be kept in the refrigerator at 40F or lower. Regular  or pectin-added, full-sugar  cooked jams and jellies are best stored for 1 month in the refrigerator after opening. They may last longer depending on the specific product and how it is used.