Canning is the process of preserving food using preservatives. Vegetables, meat and fish can be canned at home. Preservatives allow you to achieve many goals: some preserve the taste and beneficial properties of the product, others ensure its safety. The most popular preservatives include sodium benzoate E211, potassium sorbate E202 and sodium diacetate E262. This is why the use of preservatives labeled E is prohibited in many countries. Sodium citrate also falls into this category.
Table salt or soda helps preserve food. After all, they are the preservatives E250