If you're doing canning, try this. Wash your jars and check the tops of your jars. They should feel like a piece of flat glass, nice and smooth. Put them in the oven on a cookie sheet, open side up, at 200 degrees F until ready to use. This gives you more room on the top of the stove.
Source: 30 years of canning.
By ruth from Sweet Valley, PA
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To save money on canning, most jars that food came in will work just as well as "canning jars." Save the ones that are the size you need and are nice thick quality.