On 2016-10-30 6:05 PM, Bruce wrote:
> In article >,
> Nancy2 says...
>>
>> If heating destroyed all the harmful bacteria, then it would also destroy
>> botulism...but it doesn't...explain that.
>
> Not all bacteria are the same.
>
> Heating to more than 185F, for more than 5 minutes, kills botulism.
> https://en.wikipedia.org/wiki/Botulism

Read it again. Heating it to 185 for 5 minutes destroys the toxin that
is produced by the spore but not the organism itself. It is still there
so if conditions are right (or wrong?) it can produce more toxin.