Why does the screw cap sometimes fail? This is rare, but practice shows: and screw caps do not save homemade canned food from bombing. The reason for this may be not only a deviation from the recipe, but also the features of the lid. Does this mean that it can only be used once? Let's figure it out.
Read in the article
- 1 How to properly prepare a screw cap for seaming
- 2 How can you ruin a twist-off lid
- 3 How to keep the lid between seams
- 4 Interesting life hack for using the cover
- 5 How to open a screw cap without damage: practical advice
How to properly prepare a screw cap for seaming
Let's start with the terminology: screw caps are correctly called twist-off. So you can see exactly this name on the cover's price tag, don't let it scare you.
The lids are tightened on a hot can with an effort, until a dull click. Then, to check the tightness, you can turn the jar upside down and put it on a napkin.
How can you ruin a twist-off lid
If you want, you can spoil anything, and the screw cover - in just a couple of seconds. You do this very often, and now you will understand that this is indeed the case. What do you do if the lid won't twist off? There are two answers, one of which is very popular and the other is correct. Let's start with the popular one: to open the screw cap, you need to pry off its edge so that air gets into the jar - and after that it can be easily unscrewed.
How else to ruin the lid? When seaming, you can overtighten it so that the thread breaks. Then the lid will simply scroll without fixing on the jar. On the net you can find advice from craftsmen not to tighten the lid at all, but to slam it, with effort overcoming the thread. Such a technique will definitely "kill" the lid, as well as your canning efforts.
What else could be done wrong? Well, unless you put ready-made canned food in a warm place. Then you will receive an answer to a very interesting question: does the screw cap unscrew when it swells or does it just break off, like an ordinary tin cover?
How to keep the lid between seams
Twist-off can serve you more than once, the main thing is to keep the caps correctly between seams. First of all, they need to be stored dry wiped in a dry place. Moisture is the main enemy of covers, and the slightest scratch on the surface instantly turns into a rusty stain.
Throw it away mercilessly because it's just a piece of tin. And if you still use it, then you have to throw out the whole jar of jam, and this is already much more offensive.
Interesting life hack for using the cover
There is one popular idea, the effectiveness of which can only be tested in practice. You can keep the lid for a long time if you use a kind of buffer between it and the contents of the jar. This can be food grade foil or baking paper.
How to open a screw cap without damage: practical advice
First of all, there are special mechanisms for unscrewing the twist-off. These openers don't always live up to expectations and, unfortunately, can damage the lid.
Excellent results, according to users, are shown by special thin silicone wipes. Thanks to such a napkin, the hand does not slip on the lid, and ordinary effort is enough to unscrew it.
There are a couple of other popular methods: hitting the lid with your fist before opening it, or rolling the jar with the lid on the table.
What methods of opening screw caps do you use? Share your experience in the comments!
An expansion tank is not needed for a cast-iron battery, just a heating element at the bottom and a simple tap ...
The water will only expand from heating, thereby increasing the volume per hour ...
The pump from the radiator sucks water into the kettle, and the radiator itself sucks the water and ...
I had a metal-plastic jumper on the dryer (while I was making a bathroom and that ...
Indeed, before you hire a designer, look at his home!!! In my opinion, a bar ...
what the hell??? The lids of the kettles have never been airtight - the water from the radiator just ...
The author is far from the essence of the question, go to a seminar on the installation of PPR, for example aquaterm.
What kind of comfort are we talking about?? No style, no aesthetics, no functionality. Everything is valid ...
Dear author, I will tell you a little about the hardware. I work on the installation of ITP, metering units, ...
I have had heating for 7 years and not one pipe has gone on a spree, you just have to do it wisely and acc ...
The idea is not bad. I would advise you to add a razor, but atk everything is fine.
You need to keep it at an angle of 20-25 ° relative to the abrasive. The total angle is ...
Complete nonsense, the author apparently does not know that pipes with foil at the soldering points are cleaned until p ...
I will never believe that such an elegant woman lives in the atmosphere of an old woman in the middle of 2 ...
I will never believe that such an elegant woman lives like an old woman in the middle of the 20th century ...
Her accommodation in Montenegro is completely different. Here we see dusty bookshelves and a house, ...
Mom dear! I saw everything, but this is something. I just wanted to repeat some things ...
