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never_give_up

To other newbees pressure canning with the Ball Blue Book

never-give-up
15 years ago

Were you aware that the pounds pressure given for low acid food recipes in the Ball Blue Book were based on using a weighted-gauge canner and processing at or below 1,000 feet above sea level? If you are using a dial-gauge canner or processing at altitudes higher than 1,000 feet above sea level you need to adjust pounds pressure in each recipe according to a chart in a TINY little blurb in the front of the book.

Each recipe found at the National Center For Home Food Preservation spells it out nicely. I don't know how to link you to it so if someone could help me out there I would appreciate it.

In reading else where on the web I found that the reason for the difference is that recent tests have shown that dial gauges & weighted gauges actually register at slightly different pressures, so these adjustments now have to be made.

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