Canning Jar quality

by Dee
(Oliver, BC Canada)

I bought brand new Mason quart jars for canning cherries. Some of them have semi circle hair line looking cracks at the bottom of the jar.

Are they low quality? I already canned several quarts of cherries with these jars. I hoped to be able to reuse these jars for many years.


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answer:

As long as your jars are 'mason' jars they should be good to use for many years with normal use. I am sure that some jars are better quality that others.

I think I know what you mean when you see a "hairline crack". Unless the jar is leaking (this would obviously mean that it is indeed a crack) these lines are most likely a seam or something from when the jar was made.

Personally I don't have a preference. I buy most of my jars used so they are a mix of different brand names. I do notice that older jars tend to be stronger and have a thicker glass. At least that is my impression.


More information on canning jars.