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How To Reprocess Unsealed Canning Jars



Reprocessing Canned Foods

Photo © Erin Huffstetler

When canning your own food you'll occasionally get a jar or a batch of jars that fail to seal after processing. While frustrating, it's a problem that can be resolved easily by reprocessing the jars.

Difficulty: Easy

Time Required: Varies by Canning Recipe

Here's How:

  1. Check the jar (or jars) for nicks along the rim.


  2. If you find a nick, transfer the contents to a new jar. If you don't find any nicks, put a fresh lid on the jar; and secure it with a ring.


  3. Then, reprocess the jar (or jars) using the same processing time as before.


  4. Allow the jars to cool; then check for a good seal.



  1. Canning lids can only be used one time, so always start with a new lid
  2. Unsealed jars may be stored in the refrigerator for immediate use

What You Need:

  • A new canning lid
  • A canning ring
  • A canner
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