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Canning at High altitudes?

Discussion in 'Egg, Chicken, & Other Favorite Recipes' started by jomoncon, Sep 21, 2013.

  1. jomoncon

    jomoncon Songster

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    Sep 24, 2010
    New Orleans, LA
    A friend of mine asked me the following question. Since I live in New Orleans and don't have an altitude problem, I thought I'd ask all of you:


    I live in West Texas where the elevation is almost 3000' above sea level. My jellies seem to never gel quite enough. I finally figured out it is because I am dealing with mostly a liquid, and it doesn't get hot enough. I read that to gel at my altitude, the syrup needs to heat to at least 214 degrees (F). Well, liquids here boil at ~207-208...ergo, not hot enough to gel no matter how long I boil. I have read that at high altitudes you must add time to the processing time. I don't understand the science. The boiling water that heats the jars won't get hotter than 207-208 either. Will more time make the contents hotter than the boiling point? I would think one would have to have a pressure canner. Does this mean that it is impossible to make jelly here unless one has pressure equipment?​


    Can anyone help her?
     
  2. wyoDreamer

    wyoDreamer Crowing 7 Years

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    Nov 10, 2010
    We can here at 7400 feet adn have had good luck with jams, jellies, and such.
    The adjustment is for processing times - 1000 - 3000' feet is an additional 5 minutes and 3001' - 6000' is an additional 10 minutes in the boiling water bath. For pressure canning you will need to increase both the time and the pressure.

    There is a good reference chart on the Ball Canning site - here is the link: http://www.freshpreserving.com/tools/reference/adjust.aspx
    I am going to try their pectin calulator for jellies and jams.
     
  3. wyoDreamer

    wyoDreamer Crowing 7 Years

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    Nov 10, 2010
    I should add that she may need to cook a little longer - I cook until it coats the back of the spoon. Then I jar it up.
     

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