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University of Nebraska–Lincoln

UNL Extension in Lancaster County

Canning & Freezing

Canning & Freezing

IMPORTANT: When canning foods, it is important to know your local altitude. Your altitude determines the amount of pressure (pressure canner) or time (boiling-water canner) for your food. In Lancaster County, Nebraska, the altitude ranges from 1,200 to 1,700 feet above sea level.

A map showing the altitudes of various Nebraska Regions can be found in this publication: Let's Preserve: Canning Basics. To learn the altitude in other areas or if you're not sure about your Nebraska location, contact your local Extension office -- contact information is at lancaster.unl.edu/office/locate.shtml

Webpage Quick Links

Canning

Recipes (including harder-to-find recipes)


The "Complete Guide to Home Canning, "Agriculture Information Bulletin No. 539, USDA (Revised 1994) is a comprehensive resource for safe canning directions. Canning recipes not based on this latest revision may be unsafe. Here are four sources providing information based on this document. Links to some harder-to-find recipes are given at the bottom of this list.

Harder to Find Recipes

Getting answers to canning questions

Toll-free Numbers and E-mail updated

  • General Canning Questions:
    • National Center for Home Food Preservation
      To e-mail your canning question, click HERE.

    • Alltrista (source of Ball® and Kerr® canning products)
      • To e-mail your canning question, click HERE.
      • To call: 1-800-240-3340
    • Questions about Specific Canners:
      • National Presto Industries
        • To e-mail questions about Presto pressure canners, click HERE.
        • To call: 1-800-877-0441 (Parts & Service)
      • Mirro
        To call: 1-800-527-7727
        To e-mail a question, click HERE
    • Questions about Specific Canning Products:
      • Mrs. Wages
        To e-mail a question, click HERE.
        To call: 1-800-647-8170
      • Sure-Jell
        To e-mail a question, click HERE.
        To call: 1-800-323-0768
      • Splenda
        To call: 1-800-7-SPLENDA (1-800-777-5363)
        To e-mail a question, click HERE.

Frequently asked questions


Pickles

Jams & Jellies

Other

Unsafe canning practices

Sources of canning supplies updated

Use of commercial and trade names does not imply approval or constitute endorsement by the University of Nebraska-Lincoln Extension. Nor is criticism implied of products not mentioned.)

For further help in locating canning supplies, use your favorite online search engine or contact your local Extension Office.

Directions for using pressure & boiling water canners

IMPORTANT: Check the directions that come with your canner before starting to can. If you no longer have the directions or have questions about a specific canner, check with the company. Here are some links that may help you:

(Use of commercial and trade names does not imply approval or constitute endorsement by the University of Nebraska Cooperative Extension. Nor is criticism implied of products not mentioned.)

  • Pressure Canners
    • Presto Pressure Canners
      Download instruction books for specific models of Presto pressure canners from this Web page. A toll-free phone number and an address are also given for contacting Presto.

    • Mirro Pressure canners
      Mirro provides a toll-free phone number and an address for contacting them. Check their "Frequently Asked Questions" for answers to such questions as whether you can use a Mirro pressure pressure canner on a "flat top (glass or ceramic) range. (The answer to this question is no.)

  • Using Pressure Canners
    This University of Georgia Cooperative Extension Publication provides a step-by-step overview of using a pressure canner.

  • National Center for Home Food Preservation
    General information on using pressure AND boiling-water canners. REMEMBER: Low-acid foods must be processed in a pressure canner to be free of botulism risks.

  • USDA Complete Guide to Home Canning
    Includes pictures of various steps in using pressure AND boiling-water canners and of the parts of canners.

Pictures of canning equipment & procedures

(Source: National Food Safety Database)

Canning with Splenda®

(Source: National Center for Home Food Preservation [NCHFP])

Freezing

Harder-to-find recipes

Vacuum packaging


Perishable food that is vacuum packaged must still be frozen or refrigerated. For more information from the University of Georgia Cooperative Extension, check HERE.

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Food Reflections

Food Safety at Home

Canning and Freezing

Recipe Central

Site maintained by:

Alice Henneman, MS, RD,
Extension Educator
University of Nebraska-Lincoln
 in Lancaster County,
444 Cherrycreek Road, Suite A,
Lincoln, NE 68528


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