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How to Prepare & Seal Canning Jars & Jelly Glasses |
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TasunkaWitko
Admin Group Joined: 25 January 2010 Location: Chinook, MT Status: Offline Points: 9356 |
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Posted: 06 September 2018 at 15:09 |
How to Prepare and Seal Canning Jars and Jelly Glasses
This is from 1969, so it goes without saying that some of this information might be a bit dated; please feel free to discuss current practices, if different, in the comments below. From Time/Life's Foods of the World Series:
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HistoricFoodie
Admin Group Joined: 21 February 2012 Location: Kentucky Status: Offline Points: 4940 |
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From a food safety standpoint, wax sealing is no longer considered a safe practice.
But, ya know what? They still sell a lot of paraffin out there. And thousands of jelly jars a year are sealed that way. That said, the instructions for wax sealing are more than dated; they were wrong when first printed. Paraffin sealing requires two layers of wax, each about 1/8th inch thick. You pour the first, pop the air bubbles, and let it set. Then you add a second layer (again popping the bubbles). Traditionally, a hat pin was used for the bubble popping. A what? I hear you say. Well, you see, back in the day........ As to canning jars, are they really suggesting that everything be filled with 1/8th inch head space? I think not, Mary. Depending on product, jars should have from 1/4 to 1/2 inch headspace. And did back then, too. Just check the old BBBs and Kerr guides if you think not. Because I learned back then, I still sterilize jars they way they suggest. But it's no longer thought needful. If they're clean, the boiling water batch will take care of sterilization on its own. But, by bringing the kettle up to boil with the jars in it, I'm assured of 1. having enough water to heat the lids and rings, and 2. that the water will cover the jars appropriately. All while providing hot jars. |
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TasunkaWitko
Admin Group Joined: 25 January 2010 Location: Chinook, MT Status: Offline Points: 9356 |
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Good advice, Brook - I'll add asterisks at those spots in the original post, with a note to see the comments below.
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pitrow
Master Chef Joined: 22 November 2010 Location: Newberg, Oregon Status: Offline Points: 1078 |
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Also they no longer recommend boiling the lids as they've changed the rubber seal and boiling weakens it. The instructions now just say to wash the lids and rings in hot soapy water.
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Mike
Life in PitRow - My often neglected, somewhat eccentric, occasionally outstanding blog |
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TasunkaWitko
Admin Group Joined: 25 January 2010 Location: Chinook, MT Status: Offline Points: 9356 |
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True, Mike - I've added an asterisk there, as well.
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