For modern usage, these are the kind of jars available:
|Ordinary Mouth Ball Jars|
|Wide Mouth Ball Jars|
3) Gasket jars have metal clasps and a rubber seal with tabs. They are used widely in Europe, but are not preferred in North America because unlike the screw-top jars, they do not "pop" when sealed and unsealed, making it difficult to determine if it has been sealed properly.
4) Tin cans are now only used for commercial production. They are not used in home canning.
5) Also, many brilliant and useful tools have been invented in recent years for use in the kitchen, such as pineapple peelers. Modern kitchen equipment can also be useful in canning.