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While Appert’s invention marked progress, it did not help home canners—the process was extremely expensive and difficult.The only options for them was to use tin cans and solder them shut, or to plug their fruit jars—a term used by bottle maker Thomas Dyott—with corks, a practice that dated to the Colonial Era.The evolution of fruit or canning jars parallels the science of food preservation, which itself was an attempt to address a critical need.For centuries, rural farmers and the poor struggled to find ways to preserve food for the winter.Remember when the mason jar was actually a breakthrough in the American way of life?

Indeed, in 1809, Napoleon offered 10,000 francs to anyone that could devise a way to ensure that his soldiers scattered across Europe were supplied with fresh food.Of course, the canning jar didn't come out of the blue (though we'll see that the color has some significance), and its current mass-produced form was refined over the course of several decades in the latter half of the 19th-Century.The term 'mason jar' is, in fact, a generic trademark—à la Xerox, Kleenex, Jell-O et al (fun fact: phillips, as in the screw head, and zipper are also in the mix)—named after John Landis Mason's clever 1858 patent, No. The tinsmith's innovation was to create a seal the lid, as opposed to attempting to make a lid that was flush with the jar: glassmaking techniques of that era allowed for rough threading, but the tolerance wasn't nearly accurate enough to create the airtight seal needed to preserve perishables.This basic kitchen item brings up vivid memories for us of Mom canning in the kitchen. Find out more about the history and collectibility of these common jars.Jars were used by many a wife and mother to can and preserve food.While some food preservation is still done in pottery crocks, glass jars largely replaced stoneware starting in the late 1800s.