Mason Jars
Mason jars are able to withstand the heat and pressure that is necessary for water baths and pressure canning. The thick walls are made of heat-tempered glass. Ordinary glass jars would shatter if put through the same process.
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Mason jars are able to withstand the heat and pressure that is necessary for water baths and pressure canning. The thick walls are made of heat-tempered glass. Ordinary glass jars would shatter if put through the same process.