Preserving is the most common way of procuring food for future use. In the sealed glass jars, vegetables, fruits, berries, mushrooms, and meat and fish are stored throughout the cold season. Preservation of domestic canned food largely depends on the quality of the lids for canning. Let's try to figure out which lids for canning are better for using at home?
First, we will outline the criteria that determine the quality of the caps:
- should be easy to wash;
- should be harmless to health;
- should be easy to use;
- should provide long-term storage of the product.
Metal covers
Most often for the preparation of domestic blanks use metal caps for canning, equipped with a rubber ring-gasket, ensuring proper tightness. First of all, tin lids are used for canning perishable products. It should be remembered that the caps made of white metal, it is possible to use only when sealing cans, the recipe of which does not include vinegar. The fact is that such covers are exposed to oxidative processes. Therefore, they can roll up jars with jam, compotes and other fruit and berry billets.
Metallic lacquered lacquers have a golden hue and guarantee the safety of any product, since they are not subject to oxidation, so they can be used for any kind of billets. Metal caps, in addition, are very inexpensive and have a colorful design. The disadvantage of this type of lid is the need to use a manual, automatic or semiautomatic machine and the fact that they are single.
Screw caps
Reusable screw metal covers for canning of the twist-off type are used in case the glass vessel has a neck with an external screw thread. The polymeric sealed gasket ensures good preservation of the canned product. Screw covers especially help the mistresses, who are not in tune with the setting machines. In addition, the screw covers have a very attractive appearance - they are covered with bright drawings depicting fruit still lifes. The service life of screw caps is about 5 years, the rusty product must be thrown out, so as not to put your health and health of close people at risk.
Glass covers
Glass covers for canning are sold in a set with a rubber ring and are provided with steel clamps treated with a thin layer of solidol or petrolatum. When using glass lids, it is important to inspect them for cracks, chips, and burrs. Glass covers are reusable, because they are perfectly cleaned. They completely ensure the integrity of the product.
Polyethylene caps
Polyethylene lids for canning are also reusable and do not lose their sealing properties during their entire service life. Nylon cap for canning is very simple to handle: easy to install and remove, besides they are very cheap.
Vacuum covers
In traditional canning methods, the product is heated to a temperature at which bacteria perish, with some of the beneficial properties of food being lost. The use of vacuum plastic lids for canning avoids loss of product qualities, since conservation takes place by means of a vacuum in which there is no oxygen. Compulsory
Despite the presence in modern stores of a huge assortment of canned food, home preparations do not lose their popularity. The choice of lids for canning, you can implement with these recommendations.