Jars & Tins
Jars and Tins are rigid, often cylindrical containers that can hold food or raw ingredients for storage. They have a wide opening that can either be closed with a lid, screw cap, or cork stopper. Jars and Tins can be utilized to hold dry food that is too large or liquids that are too thick to be poured through a bottle. They can also be used for storing or preserving different items like jams, pickles, or honey. Jars and Tins are made from a range of materials, be of different sizes, and can have different exterior colors and textures.
A mason jar is a molded glass jar that is typically used in the home canning process that is utilized to preserve food. A mason jar has a screw thread mouth with a metal band in which a lid can be used. This type of jar was named after the American tinsmith, John Landis Mason, who patented it in 1858.
You can open a tight jar by hitting the bottom of the jar with the palm of your hand or placing the jar lid under warm water for at least 30 seconds. You can also open a tight jar by sliding a butter knife under the lid to try and break the seal.
Canning is the process that is used to preserve food within jars at high temperatures for an extended period of time. The canning process kills microorganisms as well as inactivates the enzymes that can cause food to spoil. The canning process creates a vacuum seal as the food inside the jar cools.