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> Canned jam is never refrigerated, but once opened it always is, and I'm sure that's the case everywhere. Not in Ireland. Jam lasts a very long time unrefrige
by barry-cotter 6y ago
> Canned jam is never refrigerated, but once opened it always is, and I'm sure that's the case everywhere.
Not in Ireland. Jam lasts a very long time unrefrigetated. All that sugar is a preservative. Works the same way as salting a ham. Anything that tries to grow on it gets dried out and dies.
- fakedang 6y agoI thought making jams was itself a preservation technique, just as pickling is. You don't need to keep either inside.
- frosted-flakes 6y agoCanning is a preservation technique that is a part of making jam. But once you break the seal on the jar, the food in the jar is exposed to the air and won't last as long. Regarding jam, I think it probably depends on the kind of jam. I usually get the stuff with whole strawberries that I spread with a spoon. I'm sure the typical American jelly will last a long time unrefrigerated, but that seems to be less common in my part of Canada.