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Canning -- Equipment
A weighted gauge canner made a "fizzing" sound rather than jiggling. Are the beans she canned in it safe?
Weighted gauge models exhaust tiny amounts of air and steam each time their gauge rocks or jiggles during processing. The control pressure precisely and need neither watching during processing or check for accuracy. The sound of the weight rocking or jiggling indicates that the canner is maintaining the recommend pressure. If the weight was rocking, then she was maintaining the appropriate pressure. Also, did she vent the canner for at least ten minutes before she place the weight gauge on the vent opening? If she did not, then she might under-processed the product.