Expect it to last for up to 3 weeks in the refrigerator or up to 3 months in the freezer. Jam freezes quite well. One handy tip is to keep the jam upside down in the refrigerator. This eliminates any air between the lid and the top of the jam and creates a kind of seal, making it potentially last for longer. Some jam makers prefer to keep their jams in the pantry but only consider this if your pantry is cool, else it might spoil before you get the chance to eat it all! During the warmer summer months, I really think it would be better off in the refrigerator.