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11

The important part of the system are the lids. The ideal lids are the Mason-type (no matter which company produced them), with a flat top and a separate side piece with thread. Another type that works is the older Weck style jar, which consists of a glass jar with glass lid, plus rubber steal and metal clamps, no threads. This system is as safe as the ...


4

For home pressure canning, you should always use a Mason jar (Ball is one brand, but there are others). A "Mason jar" is the kind with the two-piece lid. When using home equipment, the two-piece lid is important because it will seal properly inside the pressure vessel. If you use a jar with a one-piece lid, such as in your photo, the lid tightness needs to ...


2

Most commercial pint- and quart-size mayonnaise or salad dressing jars may be used with new two-piece lids for canning acid foods. However, you should expect more seal failures and jar breakage. These jars have a narrower sealing surface and are tempered less than Mason jars, and may be weakened by repeated contact with metal spoons or knives used in ...


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