German Made Weck Canning Jars
One of two European glass jar manufactures, the J. WECK Company was founded in Oflingen Germany in the beginning of last century.
They started in the business with a home canning technique using glass jars. The company has continued to be a pioneer the glass jarring method, which has become very popular in many parts of the world.
Pretty much any canning jar will get the job done, but if you are looking for an upscale more attractive and more expensive canning jar, Weck may fit the bill.
The WECK jar canning technique is very simple in concept and relies on two basic laws of nature.
Microorganisms sealed off during Glass Jar Canning
Food spoils by contact with microorganisms like molds and spores. During the jar canning process, if done right, any microorganisms that get into the jar are killed. The jar is hermetically sealed off from the air by the clamps that press down on the rubber ring and lid.
As Canning Jar Cools – Vacuum Created Inside
The vacuum created by cooling, along with normal pressure of the air surrounding the jar, presses the lid down onto the jar rim which creates a permanent seal. Wonderful German engineering, and the design is just elegant.
The problem is, they are not standard in size, and are more difficult to work with (IE achieving proper seal).