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

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3
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2answers
1k views

Should I throw away a jar of olives that fizzed and bubbled upon opening?

Like the title says, I opened a jar of locally produced olives and it started to bubble like seltzer. Is it unsafe to eat?
6
votes
1answer
1k views

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)?
6
votes
1answer
106 views

What are the guidelines for creating a canning recipe?

I am looking for the criteria that make an acceptable recipe for canning. Most sites say to only use approved canning recipes and not make substitutions, which is totally understandable, but surely ...
0
votes
1answer
41 views

Adjust salt (in mushrooms)

My goal over the last year has been to reduce the amount of waste that comes out of my home. That means wasting less food and buying fewer items that come in any kind of packaging. When I can, I buy ...
18
votes
2answers
248 views

How prevalent was foodborne botulism before stricter food safety guidelines?

Nowadays, foodborne botulism seems to be quite rare, even from potentially high-risk things like home canned goods. (The CDC Botulism Surveillance reports indicate on the scale of tens of confirmed ...
2
votes
3answers
104 views

Is this canning method safe to use for spaghetti sauce? (Boiling the sauce in the jars in the oven)

This technique has been used by my family for decades but I'm wondering how safe it is to kill Botulism spores. Step 1, cook the spaghetti sauce in a large pot (tomatoes, meat, fruits, vegetables, ...
0
votes
0answers
32 views

Best way to bottle peri peri sauce?

I am looking to bottle my father-in-laws peri peri sauce and sell it at markets. The ingredients consist of fresh and dried herbs, garlic, salt, lemons and oil (sunflower, canola and olive). This is ...
0
votes
2answers
72 views

How do I prevent opened canned tuna from going stale?

I want to start buying those big tuna cans to save on costs, but I know that after one day at the fridge opened tuna becomes stale. It loses its tangy flavor and gets a rubbery texture. Is there a way ...
0
votes
1answer
56 views

Vacuum sealing jars of Simple Syrup

So I'm looking to make some simple syrups (lavender, basil, etc...). In looking around I see that making 1:1 syrups via the "hot" process it should safely last two weeks and up to a month. If I ...
3
votes
1answer
124 views

Canning cheese spreads?

I've been doing some research on canning cheese in half pint jars. A few videos I watched showed some good success with cream cheese but cheddar's seem to change a bit in texture and become a bit ...
3
votes
2answers
502 views

Canning chili with beans

We're going to try canning some homemade chili with canned kidney beans. Question: Would it be best to add the beans right before canning so they don't get over cooked or do you think there would be ...
0
votes
0answers
45 views

combining two method of making Dulce de leche from a can of sweetened condensed milk

As I gather, there are various methods of making Dulce de leche from a can of sweetened condensed milk. I've actually tried boiling the can for 3-4 hours twice, and the results not entirely to my ...
1
vote
1answer
130 views

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 ...
4
votes
2answers
72 views

Can I un-seal canned tomato sauce, and re-seal after further cooking?

If I canned tomato sauce and all the jars sealed perfectly, can I open them, cook the sauce a little more, and do the process over again? I had some of the sauce today and I think it needed a little ...
5
votes
1answer
145 views

Is it ok to include garlic when I can hot peppers?

I followed the Ball Blue Book recipe for canning hot vinegared peppers. I left the peppers whole, and forgot to discard the garlic from the vinegar recipe before I filled the quart size jars & ...
2
votes
0answers
101 views

What is the minimum processing time for salsas?

I found a recipe (Wonderful Salsa at Food.com) that called for it to be processed for 10 minutes. I'm seeing now that other salsa recipes call for 15 or more minutes. Is this true for all salsas, or ...
2
votes
2answers
179 views

Is hot water bath canning really necessary?

I made a barbecue sauce that I want to send to a friend (internationally). I bought some mason jars, and was planning to just put the barbecue sauce in there, tighten the lids back on, and ship it ...
2
votes
1answer
80 views

Can I re-process homemade applesauce canned in a boiling water canner that is too thick and pasty?

The lids sealed well, but I think the apples were not juicy enough (maybe too tart) and the color of the applesauce after canning is slightly green. It's been less than 24 hrs. Maybe I didn't heat it ...
2
votes
2answers
74 views

Canning lids twisting

doing hot bath for sauerkraut. Cleaning jar rims, adding more salt water to 1 inch of top, putting new lids and rings on jars. Screwing rings on tight. Put jars in canning, filling with cold water ...
2
votes
1answer
129 views

packaging an uncooked/raw hot sauce

I make a hot sauce with peppers,parsley,garlic,salt and olive oil. I have to freeze it in jars otherwise it ferments. Is there a way to package a raw/ uncooked product without fermentation?
1
vote
1answer
78 views

Other ways to preserve red cabbage [closed]

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 ...
2
votes
1answer
175 views

Bottling hot sauces

Does anyone make bottles that can be sealed by canning method? I'll be making sauce in a few weeks and I'm looking for long term storage ideas without freezing or refrigeration. If everything else ...
1
vote
1answer
53 views

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 ...
2
votes
1answer
66 views

When canning strawberry preserves can you substitute lime juice for lemon juice?

I am making strawberry margarita preserves and would like to substitute lime juice for lemon juice.. Would that present a problem once I can them?
5
votes
2answers
127 views

The pressure cooker gauge was wrong for cans of soup I processed in the past 5 weeks. What can I do with the soup?

I've been pressure canning zucchini soup the past 2 years and it's a beautiful thing. This year I used a different pressure cooker, and I've just found out that 15psi on this pressure cooker is ...
1
vote
1answer
143 views

Bubbles in unopened store bought items?

I've noticed air bubbles in several things I've purchased recently. From pasta sauce to salad dressings to salsa. All different brands, all different flavors. I see air bubbles inside the ...
3
votes
1answer
85 views

Inversion Canning

I tried canning spiced peach jam last night with a friend, and the recipe she found called for the inversion canning method to seal the jars. I should have researched on this last night, before we ...
2
votes
2answers
93 views

water bath processing for jam

When I am canning jam, after filling the jars, can I process the filled jars in a boiling water bath in two batches, or must all the jars be processed immediately after filling?
1
vote
1answer
136 views

Fresh or dried Garlic

I'm making kosher dill pickles which calls for one clove of garlic.I have some fresh and wonder if fresh or dried garlic cloves is stronger in flavor
3
votes
1answer
515 views

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 ...
3
votes
1answer
131 views

While making pepper oil with dry crushed red pepper, do I need to sterilize the jars to store for up to 6 months?

I am planning to make a large quantity of oil cooked with dry crushed red pepper. I fry the oil on low heat with the dry crushed red pepper for awhile and then remove it. I plan to distribute it to ...
2
votes
1answer
277 views

Safety of adding dried hot pepper to opened jar of pickles

I have a particular brand of jarred pickles I buy from a local supplier. They're some kind of beer pickle, and the brine has a vinegar and IPA type of taste, and it's loaded with garlic and dill. Very ...
3
votes
3answers
191 views

Jam “separates” in processing

I've been making jams and jellies for a while now. While I don't have this problem as much with marmalade, for some reason my jam usually separates when being jarred and canned. By separate, I mean ...
8
votes
4answers
1k views

Are bubbling preserved lemons a sign of spoilage?

I recently made preserved lemons using a recipe from Jerusalem: The Cookbook. Having poked around a variety of recipes online, it's pretty much the same as all the rest: Lots of salt, squeeze out the ...
3
votes
1answer
279 views

Does glass bottled orange juice taste bad because of leached metals?

I refuse to get glass bottled orange juice any more even when it's on sale because it tastes bad to me. It seems like every glass bottled orange juice I've ever had tastes bad compared to orange ...
2
votes
1answer
106 views

Is it not possible to can some species of fish without adding oil?

Some canned fish is available in oil or brine (e.g. tuna, salmon, saury), while other types of canned fish are only available with oil (e.g. sardines, mackerel). If I were to home can some of the ...
3
votes
2answers
3k views

Should I boil canned food in water?

Do I have to boil canned food, specially tuna can, in water for twenty minutes? I think it's necessary to prevent food poisoning by botulism. However, currently that I am in Europe, I have not seen a ...
0
votes
1answer
112 views

Can my syrupy jelly be processed again to make it set, or do I need to start over?

I have a blackberry watermelon jelly that I made and it didn't set up. I waited about 3 weeks for it to set up and then reprocessed it, adding more pectin. I added 1 1/2 packages of pectin (it was a ...
1
vote
1answer
115 views

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 ...
0
votes
1answer
96 views

How long is homemade spiced apple cider good for in a sealed Mason canning jar?

I bring the cider to a boil and simmer the spices for 15 minutes. Immediately after, I pour the cider into canning Mason glass jars with the lids that have the button. How long should I expect the ...
1
vote
2answers
495 views

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?
0
votes
1answer
465 views

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 ...
4
votes
1answer
769 views

Why do bread and butter pickle recipes call for onions, mustard seed, and celery seed?

I recently made a jar of bread and butter pickles. I understood most of the rationale behind the ingredients and directions in the recipe - the cucumbers are salted to draw out water and break cell ...
7
votes
4answers
7k views

Do tinned foods go off (stale)?

This morning I found a tin of baked beans with a best before date of August 2014. A colleague of mine told me that it's perfectly safe to eat, and that tinned foods never go off. Can this be true? Do ...
3
votes
1answer
219 views

Cans are all sealed, but I forgot to boil the closed jars - should I boil them now?

I am relatively new at canning. Last night I made a batch of peach butter using a trusted recipe that I have made and canned before. I sterilized my jars and lids, ladled the boiling peach butter ...
4
votes
1answer
264 views

Canning with Quart Jars

Most of the recipes I'm finding on reputable websites for canning pickles (or banana peppers) are designed for pint-sized jars. So, naturally, I have a full dozen quart-sized jars that I'd like to use ...
0
votes
1answer
512 views

Can I used lemon juice in place of ascorbic acid in canning peaches?

Went to can my peaches and it's seven miles to the store....can I used lemon juice in place of ascorbic acid?
4
votes
2answers
232 views

Canning Hot Peppers

This is my recipe for canning peppers. I bring 3 gal vinegar, 1 gal water and 1 lb canning salt to a boil. Let cool down a bit then pour into 1 qrt large mouth with peppers, garlic and pickling ...
2
votes
3answers
2k views

Do I need to boil filled jam/chutney jars? [duplicate]

I want to start making chutneys/jams at home, but am unsure of exactly how to proceed. Friends I've spoken to have said to sterilize the jars, then just put the hot jam/chutney in, and some online ...
2
votes
1answer
119 views

Homemade Preserves

I was given 3 different jars of preserves. They left the jars in the car for 2 days in the heat of Nevada and when they gave to me you could see the jams had turned to liquid. After leaving on the ...