They come as wide mouth or regular mouth jars. With a 32 ounce (four cups) capacity, these jars are safe for canning many fruits, crushed tomatoes, and applesauce. I also use a wide mouth pint jar for making my family’s favorite salad dressing. These are my preferred size for making pickles, canning fruit, or preserving salsa. This is arguably the size canning jar I use most frequently. Two-part canning jar lids come in only two sizes and fit the corresponding jar opening. The rings or screw bands are tightened onto the jar threads to hold the lid in place during processing in a hot water bath or pressure canner. The flat lids that seal the jars are a one-time use only item you must use new lids every time you process jars. Once you have a stash of jars, you can continue to refill them with new canned goods from year to year as long as they are free of flaws. (You might also hear a canning jar referred to as a Mason jar, after a vintage brand.) There are others, of course, but to keep it simple we’ll focus on these commonly available options. These are both made by Jarden Corporation. The canning jars most commonly used for home preservation these days go by two recognizable brand names: Ball mason jars and Kerr jars. ![]() Here’s a look at the canning equipment necessary to get started with home canning. Choosing the right size will depend on a variety of factors. ![]() The glass jars used for home canning purposes come in a wide variety of sizes and shapes.
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