Water Bath Canning vs Pressure Canning

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There really is no debate on which you should choose. There are somethings are safe to water bath can but everything can be pressure canned. Why can’t I water bath can low acid foods? My grandma only ever water bath canned. I have heard pressure canners can explode. Tons of reasons to avoid pressure canning. But one big one to use it. BOTULISM!! A silent, odorless killer. Other things can happen as well but this is the big one.

What is botulism?

Picture courtesy of the CDC.

Botulism is a bacteria that can kill you. If nothing else it will make you feel sick enough you want to die.

It is a rare, potentially fatal illness caused by a toxin. The toxin is produced by the bacterium Clostridium botulinum. The disease begins with weakness, blurred vision, feeling tired, and trouble speaking.

It is a nasty illness that we can avoid by properly preserving our food bounty.

 

What can I water bath can?

Things that are considered high acid foods. Tomatoes are a big one, unless of you are growing low acid tomatoes, those varieties are a story for another time. Jams and jellies, pickled anything. Fruit preserves and most anything that you add lemon juice, vinegar, or are fermented.

Some fruits are considered naturally high in acid:

 

  • apples
  • berries
  • blackberries
  • blueberries
  • cranberries
  • peaches
  • pears
  • raspberries
  • strawberries

What should I pressure can?

Anything that is not on the above list. Those things can also be pressure canned. There are no safe ways to can fresh squash, including pumpkins. Those need to be prepared how you want them and then pressure canned. Or simply frozen.

Other items, not produce related, that you should pressure can are meats, soups, and broths. Your other option is to freeze them. All of this will prevent you, your family, friends, and customers from being poisoned.

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