I made plum jam 1 week ago, put it all in ball jars, & placed them in the refrigerator. Can I now seal those jars in a water bath for future use?
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2Welcome to SE! There might be an answer to your question here: [Can you water bath a cooked then cooled jam recipe?](https://cooking.stackexchange.com/questions/115939/can-you-water-bath-a-cooked-then-cooled-jam-recipe) If the jars have been in the refrigerator without being opened, there's a very low likelihood they've been contaminated. – borkymcfood Sep 29 '22 at 10:57