As with all home-canned meals, it would be best to maximize your pickled onion’s shelf life. Accomplish that by following all canning directions to a T. And all the time use a recipe that has been scientifically examined and permitted. Failure to take action might result in severe sickness, together with botulism, which might simply go undetected in improperly canned meals and will be deadly. Moreover, any canned meals that smells or seems questionable needs to be thrown out instantly with out tasting. Though some hissing is regular when opening items canned beneath stress, all the time toss a jar that spurts or hisses excessively.
Temperature, gentle, and humidity can all have an effect on how lengthy your home-canned pickled onions final, so remember to retailer them someplace that’s darkish and dry with a cool, even temperature. Fluctuations that may result in freezing or overheating will trigger them to go unhealthy prematurely, so select your storage location fastidiously. At all times refrigerate pickled onions immediately after opening, ideally with an opened-on date in order that you recognize when their time within the fridge is up (simply as they need to be dated when they’re first canned).