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For Pressure Canning, can I use any other jar than Ball’s Mason Jar?

Seasoned Advice Asked by Pandastew on February 22, 2021

So Ball’s Mason Jar is not as common in my country but I want to try my hand at pressure canning sambal (chili, garlic, fermented shrimp paste, no vinegar). Is there any alternative to Ball’s Mason Jar that is gold standard for pressure canning?
can I utilize this glass jar to pressure cook?

4 Answers

The important part of the system are the lids. The ideal lids are the Mason-type (no matter which company produced them), with a flat top and a separate side piece with thread.

mason jar with lid system

Another type that works is the older Weck style jar, which consists of a glass jar with glass lid, plus rubber steal and metal clamps, no threads. This system is as safe as the Mason style lids. It might require frequent rubber replacement when pressure canning, because the gasket gets quite deformed in pressure canning as opposed to water bath canning, and in the extreme cases, some jars don't seal properly because the gasket gets sucked inside. This is not a safety issue, because it is easily recognized when it happens, and you just remove these failed-to-seal jars from your batch.

Weck jar with lid

What you cannot use is single-piece twist-off LIDS as in your picture. They are not suited for pressure canning at home.

You might be able to use these jars, if you can find ones with the proper size mouth and threads to fit Mason-style lids on them. They will either seal properly and be safe, or not withstand the pressure and break apart while being heated in the canner. You will lose some jars that way, and will have a mess on your hands to clean, but you will not get food poisoning from improperly sealed jars. See https://www.healthycanning.com/re-using-bottles-from-store-bought-products/ for some expert opinions on that.

Correct answer by rumtscho on February 22, 2021

For home pressure canning, you should always use a Mason jar (Ball is one brand, but there are others). A "Mason jar" is the kind with the two-piece lid.

When using home equipment, the two-piece lid is important because it will seal properly inside the pressure vessel. If you use a jar with a one-piece lid, such as in your photo, the lid tightness needs to be very precise, or the jars will either (a) not seal properly, or (b) explode. (Ironically, it's actually safer if they explode.) That's not practical to do in a home kitchen.

Mason jars are getting more and more difficult to find these days, in many countries. But they're essential for home pressure canning.

Answered by Sneftel on February 22, 2021

You can use random jars, but it is not advised simply because you may waste food on failures of the seal and risk illness from contamination. It is not worth the risk of injury versus the cost of the better equipment.

Canning jars come in standard sizes of mouths and lids and have wider lips for better seal. Additionally, the glass is tempered to resist the temperature extremes so they are less prone to cracking. This makes them useful for freezing liquids as well. Mind the liquid expansion if you do this.

Source: https://nchfp.uga.edu/how/general/recomm_jars_lids.html

Answered by Eric on February 22, 2021

I believe further research would change your answer. The jar the questioner pictured is certainly safe and is proven so by the fact it has already withstood the far more rigorous commercial pressure canning process.

The lids on those jars are reusable many times. But I prefer home canning with new lug lids I purchase from a wholesale company ( I use Fillmore).

The conglomerate that produces the Ball-type two-part lids makes most of the brands sold today. The internet is full of tales of woe from experienced home canners finding delayed fails in the new 18-month lids weeks after storing the jars.,

Home canning jars are annealed with different properties from tempered.

In summary there are 3 choices for pressure canning lids

1) 2-part single use flats with reusable rings (balll-type)

2 2-part flats & reuseable rubber gasket made by Tattler (wire bail or separate reuseable screw ring is needed)

3) a secret known to home canners for many years, commercial quality jars purchased at great expense with one piece ‘lug’ lids. (or reused jars from grocery store purchases, spaghetti sauce for example. These jars have already been used in commercial pressure canning so are proven safe.

Answered by Bett Alln on February 22, 2021

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