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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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In industrially produced soup, how does each can contain equal parts of all ingredients?

In the soup that you get at the store, how come you never get cans of just broth? You'd think that if the soup were made in a large vat, the first few cans would have very little broth and the last few cans would have exclusively broth... but that's…
Andrew Dunkman
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Can pressure canning be replaced water bath canning?

I wanted to make and can, my Grandma's tomato soup. However I don't have a pressure canner. I made the soup in a 15 PSI pressure cooker and then poured it into sterilized jars and then canned it in a water bath canner, but now I am second guessing…
Desiree
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How to determine if canning is safe?

How can I tell if it is safe to can a particular homemade sauce? Is it just a function of pH and technique (pressure vs boiling water) or are there any other factors in play? Specifically, I would like to can a tomato sauce that I use as a base for…
yossarian
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Plum preserving/storage method that tastes like plums, not prunes (I just picked 30 lbs)

I just did some neighborhood foraging and picked 30 pounds of red plums. They are delicious, but even I will have trouble eating them all this week. Last year we made jam/preserves but it ended up tasting very prune-like, i.e. not the tasty fresh…
Mark A
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Is this process of canning jars safe?

Recently my MIL came over to show my husband and I how to do some canning. We made diced tomatoes, salsa and pasta sauce. We cooked the diced tomatoes, placed in jars and put in water bath. We did the same with the salsa. We realized though, that…
Linny
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Can you save canning jars after you've realized they've been improperly sealed for a month?

My family decided to can pasta sauce, salsa and whole tomatoes about a month ago. A few days ago I was talking with a friend about how we canned our sauces, and they told me it wasn't safe and that we didn't boil or sanitize enough. I'm worried…
Linny
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Is there an organic preservative that I can add to homemade pesto to extend its refrigerated shelf-life?

I have a very large basil crop this year for which I am extremely excited. In addition to drying and putting that up for myself over the winter, I want to put up pesto for me. I especially want to ship some to my sister and a friend, both of whom…
Michael
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What is the lowest temperature at which botulism spores are killed?

I am wondering if it's possible to pressure can low-acid foods in my Instant Pot. Now hear me out. I know it's not recommended because the highest pressure that can be guaranteed on it is 10.2 PSI, and many low-acid foods require 15 PSI for a…
Christy
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Canning with candles

I am not sure about the right terminology as I am not a native speaker, but is it possible to conserve solid food in a jar with a candle? Boiling is used to decrease air and for the food to be well conserved it must not have much oxygen. The food is…
Corelation
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Canning fresh meat in an oil bath?

I was recently given some home canned fresh pork, that was preserved by boiling at 100C for three hours. It is only a few weeks old and tastes delicious, but after reading up on canning processes, I believe the above process is not safe. The canned…
Sentinel
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Does canned tuna contain preservatives?

I want to know how the tuna can be kept for so long in a can. Do they use preservatives? Or is it just tuna and water (or oil or brine)?
MOON
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How to get the pits out of clingstone peaches for peach butter

I'm making peach butter. The recipe I have uses the skin on the peaches (you put the peaches in a blender, put them in the slow cooker with sugar and spices, then use an immersion blender at the end to blend it all again). Unfortunately the…
Brooke
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What can I do if I didn't process my salsa long enough?

I made salsa last week, and processed the jars (quarts) for 20 minutes (may have been 25, I forgot to note exactly when the water started to boil). I got my times mixed up for the salsa and some applesauce that I was preparing to can also, so I…
Anne
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2 answers

Stockpot double as beer brewing pot

I wanted to buy a large stockpot for canning tomato sauce and be able to use the same pot for the double purpose of beer brewing. I'm considering Update International Stainless 40 Qt. stockpot. It has stainless encased aluminum base to make…
Kathi English
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Can you water bath a cooked then cooled jam recipe?

I tried a peach jam recipe that is cooked then cooled to thicken without pectin (6+ hour cool time). The recipe says you can freeze it or can it. What would be the safest method to can it? I have always used the water bath method while the jam was…
Diana
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