Vacuum lids for canning appeared relatively recently, and so far have not been able to win the hearts of those women who are accustomed to the standard version with tin lids or plastic ones. Yes, and they cost, at first glance, much more expensive. To understand whether the game is worth the candle, you need to make some calculations. And they show that if you do not regret money, learn how to use it correctly, and do not lose money with quality, then it will become clear over time - the vacuum lid is a very economical option.
Do not believe their quality? Check first hand
If you take into account that such a kitchen device is reusable in terms of use, not having once regretted money for a quality product, you will forget about buying tin lids for a long time. Each cover is able to survive two hundred closures, and this is a service life of at least three years.
You can usually find on sale sets of three, nine or more caps, and a special pump. You can take the minimum set for the sample in order to evaluate the advantages for yourself, to understand how to manage them and to test in practice what kind of workpiece will result from "evacuation". That is, vacuum covers with a pump can and should be purchased as a probe for starters.
Operating principle
To begin with, we will focus on the fact that such lids are used only for glass jars. No other containers with a suitable neck (tin, plastic) are suitable for this case.
Next, you need to make sure the integrity of the banks. You must understand that by creating a vacuum, you thereby create a pressure inside that is lower than that of the environment. Thus, cracks and chips can make the jar burst. But we don’t want this, right? Therefore, we carefully inspect the bank for defects.
Naturally, jars and caps should be sterilized before closing. Then tightly press the cap to the neck and insert the pump at least tightly. Taking the handle in the handles, we move the pump rod up and down until it spontaneously starts to return down. This can be considered the completion of the closure. After you practice, the process will take two minutes on the strength.
If something from preservation - brine, pieces of jam, etc., got into the pump, you need to rinse it with warm water.
It’s easy not only to close, but also to open
No appliances are needed to open the preservation for which the vacuum cap was used. It is enough to simply lift the valve at the place where the pump is fixed, air will enter the can and the lid will open easily.
The practical thing is that even having opened a can of cucumbers, for example, you can close them again with the same lid, and thus extend their shelf life again.
Vacuum caps - for canning and only?
We talked about reusable use. The advantage that a vacuum cap has over an ordinary one is also that it is applicable not only for canning. With the help of such a device, you can even store food in the refrigerator. As you know, oxygen adversely affects the safety of any type of food, whether it is raw or fresh, meat or fish, fruits or vegetables. Vacuum lids for cans will help preserve nutrients and slow down the spoilage process. If you are committed only to freezing or storing food in plastic wrap, it will be difficult to convince you, but it is possible. It may seem awkward to some to store cheese, meat or fruit in jars under a lid. The only argument is that the vacuum lid allows you to save food much longer. No need to do this all the time, use this storage method during departure, for example.
For bulk products, spices, coffee or tea, such a lid will also be an excellent solution.
Air will not penetrate into containers with such substances, and will not leave them. Due to this, all the fragrances distributed by seasonings will be preserved, moisture will not penetrate to them, because of which you can not be afraid of problems with mold,
food moth , etc.
Even technical substances such as paints, varnishes, glue, can be saved from drying out soon. One has only to understand that in case of contamination, it is unlikely to be aesthetically pleasing to use covers again.