Signs Your Home-Canned Food Has Spoiled (and the Botulism Rules That Matter)
There is one sentence that causes more botulism cases than any other in home canning: the jar sealed, so it must be fine. A vacuum seal proves the jar is airtight. It does not prove the jar ever got hot enough. And an airtight, low-acid, room-temperature jar is precisely the environment Clostridium botulinum requires —…