A weck jar is a special kind of jar that is used for storing food, like pickles or jams. It's made out of heat-resistant glass and has a lid with two parts: a rubber ring and a metal clamp that holds the lid in place.
To use a weck jar, you first wash it very well to make sure it's clean. Then, you put your food into the jar and make sure it's packed tightly. You also make sure there are no air bubbles in the jar. Next, you put the rubber ring onto the jar's lid and place the lid on top of the jar. Finally, you use the metal clamp to hold the lid in place.
The rubber ring on the lid is important because it creates an airtight seal. This means that air can't get inside the jar and spoil your food. The metal clamp holds the lid securely in place to make sure nothing can get inside the jar.
When you want to eat the food you've stored in the weck jar, you have to open it carefully. First, you loosen the metal clamp and carefully lift the lid off of the jar. You should hear a "pop" sound when you open the jar, which means that the airtight seal has been broken.
Weck jars are great for storing food because they keep it fresh for a long time. They're also reusable, so you can use them over and over again. And because they're made out of glass, you can see the food inside the jar without having to open it up first.