Canning tomato sauce problem, jar broken in boiling method
It was my first try to canning tomato sauce but I failed.
- I prepared a tomato pizza sauce.
- I boiled a jar and lid then removed it
- I filled the jar with sauce and left one inch empty space and closed with the lid.
Then I put it in the boiling water and what happened:
- As soon as I put the jar in the hot boiling water, some air bubbles appeared.
- Then after few seconds, the jar broke from its bottom
And I failed in my first experiment.
What should I be doing differently for this not to happen next time?
Best Answer
Jars burst either because of internal pressure or thermal shock.
There are a couple things you can do to reduce the risk of bursting.
- use actual canning jars.
Some people like to reuse regular jars that aren't as strong. This will often work fine but increases the risk of bursting. - make sure the jar is hot.
A cold jar into hot water or a hot jar into cold water will burst almost every time. - bring water to a boil after adding jars
- don't overtighten lids.
Rings should be tightened just enough to firmly hold the lid on. Too much and pressure won't be able to escape during boiling. Remember the bottle is sealed by pressure-not by the ring.
Based on your description, if you had any of these problems I would suspect the last.
However, sometimes bottles just burst because of manufacturing defects. This doesn't happen often but it is sad when it does.
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What to do if a jar breaks during canning?
Most of the time you will either hear the jar bottom go as you set it in the water or you won't know one broke until you are finished and remove the lid. But if you should happen to hear it and time is almost up just let the rest finish processing. It won't hurt the other jars.Why did my canning jar break in the canner?
Sudden change in temperature create too wide a margin between temperature of filled jars and water in canner before processing. That leads to "thermal shock" in the glass jar. Food was packed too solidly or jars were overfilled. Then as the jars heat in the canner, their contents expand and the jar breaks!Will jars crack in boiling water?
Will a Mason Jar Explode in Boiling Water? Most of the time, a mason jar will not explode in boiling water. Submerging them in boiling water is actually a common way of sterilizing them for canning.Why did my tomato sauce separate during canning?
Separation in canned tomato products is not unsafe. It merely reflects the action of enzymes in tomatoes that have been cut and allowed to sit at room temperature. The enzymes that naturally occur will begin to break down pectin in the tomatoes.Quick \u0026 Easy Canning of Tomato Sauce
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Answer 2
Your jar may have died of thermal shock. The bottom of your canning pot should have a spacer that keeps the jars from directly touching the pot's potentially quite hot bottom. You can buy purpose-built spacing grids, or use something like this:
Those are canning jar lids in the bottom of the pot.
Answer 3
It seems that you added room temperature or (just warm) jars into boiling water, thermal shock broke the glass. Put room temperature closed jars in water, put cotton kitchen cloth between jars in the water, turn the gas on and continue. When the water starts boiling leave it boiling for 30 to 40 min. Turn off gas, leave them for one hour to cool and then take them out and dont open the jars. Store them in a relatively dark area, open only the one u need to use first. Basically speaking, jars with circular metal lids should have their top lid surface become slightly concave after boiling, this means the air went out and now they can be stored for a year. If the top of the lid remains straight or convex, there is a chance that the sauce will rot after a few weeks because air is still inside, and bacteria can resurrect to life.
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