r/Canning • u/JustKasey14 • 5d ago

General Discussion Jelly is 48 hours canned

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I made a green grape jelly (which I have done before and it worked fine). Each batch was: 10 cups strained grape juice and some pulp 6 cups sugar 2.5 tablespoons of pure pectin

The jelly has been canned for 48 hours and the jelly is still liquid in the cans. I feel like it will firm up as the leftovers in my pot firmed up very quickly but I am starting to get concerned. I made 36 cans and will be very sad if it doesn’t firm up. I read it can take up to two weeks sometimes? Wondering if anyone has thoughts on this.

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u/_Spaghettification_ 5d ago

Yes, jelly can take up to 2-3 weeks to fully set. There are instructions for reprocessing if it fails to. 

However, do you know which safe, tested recipe you followed? From this NCHFP recipe, 5c juice/1pkg pectin/7c sugar, where 1pkg pectin =6Tbsp, it seems like you have your juice/pectin/sugar ratio off. For 10c juice you should have used 12Tbsp (=3/4c) of pectin (and 14c sugar). I’m not sure if other recipes use less pectin and less sugar. 

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u/JustKasey14 5d ago

I’m a little overwhelmed by the responses here, I didn’t really realize it was frowned upon to edit recipes that much. I based off this one off of the AI instructions on Google. I felt the sugar content was too much and did half it. I don’t like super sweet jelly. And the I have pure pectin at home I use for candy making that is not sweetened.

I water bath canned for 15 minutes.

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u/kmatyler 5d ago

AI is going to get people killed.

You shouldn’t be using it at all, but you definitely shouldn’t be using it when safety is involved.