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Use Up-to-Date Canning Recommendations
Source: National Center for Home
USDA Complete Guide to Home Canning, 2009 is the most recent update of the canning guide. Two of the revised recommendations (from 2006 revision) that are most frequently noted involve the waiting time recommendations below. These new waiting time recommendations were added to improve lid performance and reduce sealing failures.
Water Bath Wait Time: 5 Minutes
These new waiting time recommendations were added to improve lid performance and reduce sealing failures. These directions should be added to canning procedures for all products.
In 2006, water bath canning directions were updated, advising consumers to "Wait 5 minutes before removing jars" to be consistent with a major canning lid manufacturer's advice based on their research on lid functioning and seal formation. ( When using a boiling water canner: "After jars have been processed in boiling water for the recommended time, turn off the heat and remove the canner lid. Wait 5 minutes before removing jars from the boiling water bath canner.")
Pressure Canner Wait Time: 10 Minutes
Also in 2006, pressure canning directions were updated advising consumers to "Wait 10 minutes, unfasten the lid, and remove it carefully" to be consistent with a major U.S. pressure canner manufacturer's advice, as well the advice from the major U.S. canning lid manufacturer. (When using a pressure canner: "After the canner is completely depressurized, remove the weight from the vent port or open the petcock. Wait 10 minutes; then unfasten the lid and remove it carefully. "
New for 2010: Can Your Vegetables Safely (NCHFP) by Elizabeth Andress, PhD.