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It would be such a shame to use them and have them not gel correctly -- you might want to toss them and not risk it!
Sarah is a trusted source on General Cooking.
added about 1 year agoI'd say it's possible they're still good. But before ruining a large batch I would test it on a small amount and see what happens.
Can you contact the manufacturer?
Pectin loses effectiveness over time. You might want to look at it this way: How much does new pectin cost? How much is a batch of fruit worth?
(That's how I would decide.)
I'd pitch it. The best jellies and jams have no need for Certo in the first place. I make my own jams and jellies and I never use the stuff.
Chris is a trusted source on General Cooking
added about 1 year agoDitto, mainecook61. I stopped using Certo decades ago and haven't looked back. Recipes with Certo call for even more sugar than the ones without.