Reply To: Re-canning what was already canned

  • M2photo

    Member
    October 17, 2022 at 11:34 pm

    Botulinum spores are on most fresh food surfaces, but because they grow only in the absence of air, they are harmless on fresh foods. The conditions which favor the germination of these spores are low acidity (such as in vegetables and meats) and the absence of air (such as in a sealed canning jar). These Clostridium botulinum spores can be destroyed by pressure canning the food at a temperature of 240 F or above for a specific period. If you find timetables on recipes for processing low-acid foods in a boiling water bath canner, do not use them. Research has shown that these timetables present a very real risk of botulism. <div>https://extension.umn.edu/sanitation-and-illness/botulism
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