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CANNING PROBLEMS

Problem: Liquid is lost from jars.
Causes and Remedies:

1. Jars are packed too full or too tight.
   When food and liquid are boiled, they expand. If there is not sufficient room, liquid will be forced out.
   Leave adequate head space of 1/2"- 1" as recommended in the chart.
2. Air bubbles are trapped in jar.
   When food begins to boil, air bubbles will force liquid out of the jar.
   Before closing jar; run a plastic spatula down the sides of the jar to release any trapped air.
3. Pressure is allowed to fluctuate during processing.
   If heat is adjusted up and down frequently, it may cause sudden changes in pressure, which may force liquid out of jars.
   AFter control starts to jiggle, adjust heat so that the control gently rocks. Avoid frequent adjustments.
4. Pressure is reduced too rapidly after processing.
   If pressure is rapidly reduced, such as by running cold water over the canner, or nudging the control frequently, the pressure in the canner may drop more quickly than the pressure in the jars, and liquid may be forced out of the jars.
   Allow canner to cool normally to room temperature. After 25-35minutes (for a small cooker) or 40-45 minutes (for a large canner), check pressure by nudging control.

Problem: Canning jars break.
Causes and Remedies:

1. Commercial food product jars rather than home canning jars are used.
   Use only canning jars intended for home canning
2. Damaged jars are used.
   Old jars may have invisible cracks. Jars may be damaged in shipping. Carefully inspect jars before using.
3. Jars are placed directly in canner without rack.
   Always use rack.
4. Hot jars are set on a cold or wet surface or exposed to cold drafts.
   Set jars on a cooling rack or on several thickness of cloth. Protect from drafts.
5. Jars are damaged by using a knife to release air bubbles.
   Use only a plastic or rubber spatula to release trapped air.
6. Hot jars placed in cold water. Cold jars placed in hot water.

FOR MORE INFORMATION ABOUT CANNING:

1. Ball Corp., Muncie, IN 47302, 1-800-240-3340
2. Consumer Information Center, Pueblo, CO 81099
3. For more information about our canning equipment:
   Consumer Center, P.O. Box 1330,
   Manitowoc, WI 54221-1330 Phone 1-800-527-7727
4. Your University Extension County home economist will also have information about home canning.

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