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Questions tagged [canning]

Questions about food being preserved into glass jars, metal cans, or other air-tight containers using a variety of heat treatment steps to ensure a reasonable level of pasteurisation and/or sterilisation

Topics accepted within this tag:

  • Problems with preserving recipes, especially if the recipe can be referenced

  • Techniques for using preserving equipment

  • Selection of preserving equipment

  • Selection of preserving containers for food types - glass, metal, other

Topics not accepted within this tag:

  • Discussion on the health benefits of preserving

  • Discussion on the shelf life of preserved foods

300 questions
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How do big companies can products at large scales?

Canning product in small batches can be done using bath or pressure canning. But it takes a long time for canning a small batch. I was wondering how big companies do it at large scales.
AliBZ
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Chicken Broth & soups are spoiling

I have canned for years. Tomatoes, jams, etc. I startedcanning my own chicken broth and sometimes it spoils or smells terrible after canning, even though it seals. It's usually no ore than a few months old when I try to use it, but am disappointed…
user52493
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Canning with water bath

While canning tomato sauce today using the water bath method, three lids "pushed outward" while in the water bath. After they were removed at the end of the canning time, they all seemed to seal, but still have a dent where they were pushed out. …
Karlene Grelck
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why (Calif.) apricot & peach jam will not set?

For years, both my mother's and my own apricot and peach jams would never set up. The pectin package warned us that it might take up to 2 weeks to set (WHY??), and we always waited and checked, but it didn't happen then either. Plum and blackberry…
Lorel C.
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Why are home canning jars made of glass and not metal?

I was hoping to can some food to take backpacking and looking for metal canning jars for home canning, but as far as I can see, they don't exist. Is there any reason why canning jars are made of glass? Metal seems like it would be lighter and…
azani
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Other ways to preserve red cabbage

We have 3 nice heads of red cabbage to pick soon. We are most likely going to can it all as sweet and sour cabbage but before we do that I was wondering if there are other ways to preserve it using the canning method.
NKY Homesteading
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Can I keep canned peaches in the fridge if water got in during processing?

I followed all the rules to a tee. Unfortunately, before immersing jars for final boiling, I apparently did not tighten the lids enough. I just took them out of the boiling water after 30 minutes and the screws lids were loose and looks like water…
lucy Manning
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Spicy margarita jelly not setting up

I made a spicy margarita jelly that hasn't set up after almost two weeks - even in the refrigerator it's still "loose." I don't have the exact measurements in front of me, but I soaked a scorpion pepper in tequila for about 2 hours. Then I added…
Brooke
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Why would hot-packed green beans go bad when still sealed?

My hot-packed green beans went bad. They are still sealed, look nice and green. On the bottom there is a white slime. When I opened a jar they smelled terrible. What happened?
Maw
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Does cooking one month expired canned goods render it edible?

Sometimes when preparing to eat canned goods, I realized that it has already expired. I am hesitant to throw it away because it may still be edible. Question: Does cooking expired canned goods make them edible? Assume that it expired no more than…
Cary Bondoc
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Making Habanero Jelly - Safety and Preventing Spoilage

I have recently made a large batch of habanero jelly, and followed the recipe exactly (please see References). I am wondering, why is the final boil of the sealed jars necessary? I've already boiled the jars, lids, and locking mechanism, and the…
Cloud
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Help for thin flavorless jam

I made a blackberry/blueberry jam about 3 1/2 weeks ago. Due to work and school, I lost track of time. The jam came out a little thin (and flavorless). Is it too late to reprocess the jars? It was a double batch so I have about 13 jars. I…
Brooke
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How to make Grape Must

I just bought some grape must - it's a must on spinach salad! I am thinking of turning some of my own homemade concord grape juice into the same. Any advice, other than to reduce by slow boiling? Can I can the results in a hot water bath? Will the…
mamadalgas
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Forgot to acidify tomato sauce

I have 6 pint jars of tomato meat sauce, which includes shredded carrots, onions and ground pork sausage. I forgot to add citric acid this time around, but did process at 11psi for 60 minutes. Is there any danger to consuming the tomato sauce…
David
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Fresh lime juice vs. bottled for canning tomatoes

After I canned some tomatoes using fresh lime juice, I noticed the recipe called for bottled. Will this batch be shelf safe?
Liz
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