Questions tagged [food-preservation]

Questions about LONG-TERM food storage such as canning, pickling, freezing, and drying.

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Where can I purchase calcium disodium edta preservative?

I'm trying to make homemade mayonnaise with a longer shelf life. I see all the commercial brands list calcium disodium edta as a preservative so I was wondering where I could find this ingredient. I ...
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66 views

Packaging/Bottling and Uncooked Hot Sauce

Forgive me for the post being long! I make a buffalo sauce/marinade that all my friends and family rave about. I’d love to be able to give some to them to keep in the pantry, especially the ones that ...
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1 answer
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How do pastry shops get away with displaying cream filled pastries without a display fridge? [closed]

I see many French and Italian pastry shops displaying and serving pastries that are filled with creams and custards, but these were not stored in a display fridge. Don't all these need fridges because ...
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3 votes
3 answers
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Can flavoured syrups be dried to powder, and if so how?

I've made some rather good ginger syrup by simmering chopped ginger root in equal parts sugar and water, then straining. I made rather a lot, nearly half a litre, and used less than planned. Most is ...
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1 vote
3 answers
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Best way to preserve guanciale (or other cured meats) in the fridge

I have a 1.2 KG piece of guanciale currently still vacuum sealed. It will take a few months to eat so, once opened, what should it be wrapped it in to maximize it's lifespan in the fridge? Are the ...
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0 answers
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Food preservation in refrigerator [duplicate]

I am an international student in France and as I live alone, products are put in fridge for later use after being opened. Two months in and I never had a problem with storing food in it but today I ...
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1 answer
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Deterring mold on bakery bread [duplicate]

Lately we've been finding that we can only keep quality bakery bread loaves on the counter for about 5 days before they start to mold. We'd like to get a little longer out of them -- say 8-9 days -- ...
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For how long can marinated chicken breast be stored frozen? [duplicate]

After I marinate chicken breast in buttermilk for 50 min., for how long can it be frozen?
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2 answers
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How does the size of the ginger affect the candy process?

https://www.youtube.com/watch?v=v-MFpM74SNw&ab_channel=Carolineartiss I'm interested in candying ginger, like in this video. I want tiny candied ginger pieces to use in ginger biscuits. I'm just ...
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I am making duck confit this weekend and will refrigerate it. I am curious though; what are the concerns for leaving it in a cool room?

I've made duck confit many times before and used it fresh. This time, though, I'd like to try to age it in the fridge a bit to see if I notice a difference. To do this I've purchased some earthenware ...
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32 votes
5 answers
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Can my freezer be too cold?

The FDA recommends a freezer temperature of 0˚F (-18˚C). Warmer temperatures risk bacterial growth and quality problems. But what are the reasons not to set the freezer colder? My Bosch freezer can be ...
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I am concerned that some cooked food I left out overnight on the counter could contain botulism [duplicate]

I accidentally left some cooked summer squash and red peppers lightly coated with olive oil in a pan wrapped loosely in foil on the stove overnight. My boyfriend didn't notice it and set a cookie ...
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16 votes
3 answers
5k views

What is the process of storing food in toothpaste'ish tubes?

You know what I'm talking about, these food tubes that are popular for tomato paste, or pesto. Searching for 'food in tube' or 'how to make your own tomato paste in tube' yields mixed results, so I'm ...
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1 answer
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Popped lid in pressure canning

One of the lids on a quart jar of green beans "popped" after sitting on the kitchen counter for two days. It was one of a batch of a dozen jars canned in that session. The others are fine ...
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1 answer
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How to preserve fruits for 10+ months?

Scenario. I drink fruit smoothies (e.g. apple, milk, nuts, with protein powder) on daily basis. Goal. Minimise my costs. Thought. I guess if I buy my fruits (e.g. apples) in large quantities in the ...
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1 vote
2 answers
337 views

How to remove salt from sun-dried tomatoes

I have a large packet of sun-dried tomatoes, the type that are preserved dry with salt rather than the type sold in jars covered with olive or sunflower oil. It's a large packet so I don't want to ...
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3 votes
1 answer
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How can I prevent discoloration in lactic fermented vegetables/sauces?

I make lactobacillus fermented hot sauces and have noticed that they get a slight brownish discoloration over time. I'm curious if there is something I can do to keep the original color of the food.
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0 answers
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Is a toasty preserved ok during trip if in a backpack? [duplicate]

When making toasted bread with filling such as turkey slices etc (toasted as well) with avocado spread, is there any problem of having it in a backpack while on a trip and eating it after few hours? I ...
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1 answer
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Tomato sauce lids didnt seal [duplicate]

I processed tomato sauce last night and 2 lids weren't sealed in the morning. They all seemed sealed last night.. Can I safely reprocess them this morning even though its been 8 hrs that they sat ...
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3 votes
2 answers
237 views

How much should I expect "quick pickling" to extend the shelf life of refrigerated cabbage & onions?

When "quick pickling" vegetables (submerging them in a salt + vinegar brine, but not properly canning them in fully airtight containers at high temperatures that would guarantee the product ...
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2 votes
1 answer
111 views

Is there any way to increase the shelf life of mixed egg

I poured the leftover mixed egg white and yolk into a container and I didn't refrigerate it. When I opened after a day there is a bad smell come from the container. Is there any method to preserve the ...
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4 votes
1 answer
114 views

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 ...
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7 votes
4 answers
1k views

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 ...
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1 vote
3 answers
75 views

Storing Self-Made Cookies/Brittles/etc longer: ingredients and techniques

I like to make a large amount of pan sheet cookies or brownie brittles as something to crumble over my breakfast yogurt. Something in the style of variations on the following recipe: https://www....
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0 votes
2 answers
245 views

How to maximize shelf-life of freeze-dried food beyond 25 years? How far can this be exceeded?

Many manufacturers will sell and advertise emergency preparedness food packs to still taste "great" 25-30 years into the future (or at least maintain a consistent taste over this period). ...
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1 vote
4 answers
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With few items, it easier/safer to use the fridge for everything, are there trade offs?

I don't keep much food in the house, and generally use the fridge as a general purpose store for all kinds of food, as a way to slow down chemical reactions and lifeform growth alike, as well as ...
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1 vote
0 answers
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Are there negative effects of freezing clarified stock?

I have clarified some chicken stock using the ice filtration method. Are there any negative effects to re-freezing this newly clarified stock (such as becoming cloudy again, losing flavor, etc.)?
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0 votes
1 answer
92 views

On preserving dried ginger

Based on my reading, preserving dried ginger is the same as preserving fresh ginger I.e airtight and in the fridge. Is there anything more that can be done to preserve the dried version. After ...
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5 votes
1 answer
182 views

Difference between Vietnamese and Moroccan preserved lemons?

One ingredient that I enjoy using is Moroccan preserved lemons, which are lemons that have been packed in salt. However, I don't always get around to making my own, so I sometimes buy them at Middle ...
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1 vote
1 answer
157 views

How to preserve a spread in a jar

I am starting a business making a vegan chocolate spread. It is beginning as a small, family run operation, in a hired industrial kitchen. We are stuck on how to 'treat' the spread when getting to the ...
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2 votes
1 answer
215 views

What exactly is a boozy preserved egg and how are they made?

On page 431 of Fuchsia Dunlop's The Food Of Sichuan there is a sort of vague description of a boozy preserved egg (zaodon, 糟蛋) but I'm having trouble finding any more detail on how they are made. This ...
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1 vote
1 answer
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Is it possible (and easy) to dehydrate meat in oven?

I'm looking to buy a stovetop oven since I don't have a regular oven, but the temperature slider of most ovens seem to go from 100C to 230C while dehydrating meat should occur at 70C. Is it viable to ...
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0 votes
2 answers
146 views

Orange juice preservation by chemical presevatives

How much Sodium Benzoate should I add to preserve 200ml of Orange juice?
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0 votes
1 answer
64 views

Re-canning Ghee that was not strained well

I made Ghee and pressure canned it for long term storage. After it hardened, I noticed quite a lot of brown bits in it; I didn't strain it well. Can I re-melt the Ghee, re-strain it and pressure can ...
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8 votes
2 answers
3k views

Does fruitcake made with alcohol stay alcoholic after aging?

I'm trying to keep up a tradition of sending fruitcake out to families, only I know some families are more averse to alcohol in general than others. The recipe I have uses 170 grams of brandy as well ...
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0 votes
0 answers
84 views

After few day of plastick bag packing of Tomato sauce increase the size of it and produce gas in plastic bag

I am one small manufacturer of tomato sauce and dates sauce . And my question is regarding preservative i.e we make tomato sauce and paking it in plastic bag after few day this paket size increasing ...
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1 vote
0 answers
65 views

What Impact Does Meat Curing/Preservation Have on Nutritional Content?

I am currently trying to research nutritional facts for cured meats and other preserved foods. In specific, I am looking for any information about the caloric impact that preservation methods might ...
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6 votes
1 answer
190 views

How much shelf life do oxygen absorbers add to food?

I am in the process of storing all my dry foods in airtight jars and bottles. I mainly want to prevent pests, but also want to increase shelf life. There are some foods I need very infrequently and I ...
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6 votes
2 answers
330 views

Canning Tomatoes: When are they too blemished and why does it matter?

In every canning recipe I have seen, the recipe calls for unblemished tomatoes, but this has never been explained further. The sources of these recipes has been on various internet sites (the kind ...
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1 vote
1 answer
75 views

Preserving oil and lime based dressing for resale

I make an oil and lime based dressing that everyone loves and says I should sell. I am having a hard time finding out the requirements to safely preserve the dressing for resale. There has to be a ...
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31 votes
3 answers
5k views

Can I make a neverending Soup in an instantpot?

I'm a truck driver, and I have a minifridge, a microwave, an Instant pot, and an electric water kettle on the truck with me. I've been experimenting with various ideas on how to best feed myself. So ...
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0 votes
1 answer
499 views

Can I reuse glass bottles with plastic lids for homemade sauces?

I have bottles with plastic screw top lids (from supermarket bought hot sauce). Can I use these bottles for my homemade bbq/tomato sauce? I would sterilise the bottles as I usually do. I have ...
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0 votes
2 answers
78 views

Shelf life and preservation of home soaked and drained black beans

I am looking to see if I can avoid store bought tin of black beans for our Mexican recipes, we typically decide suddenly to make a Mexican dish and usually dont have soaked beans handy. Is it possible ...
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2 votes
1 answer
173 views

Preserve peppers before smoking -- freeze or dehydrate?

I would like to make some chipotle (smoked red jalapeno peppers) at home. Currently I am building a smoker in my garden, where I also I grow a few jalapeno plants. My problem is that the peppers are ...
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0 votes
0 answers
37 views

Shelf Life of Gochujang [duplicate]

I made Korean Gochujang with the following ingredients: Fermented White Miso Paste, Gochugaru (Fine powdered chili flakes), Sugar, Water, Salt and Vinegar. I cooked all ingredients except for the salt ...
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1 vote
1 answer
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Canning jars seal then go bad

I have canned a lot in the past with with aa jar here and there. But the last year I have lost so much food to crowning of lids after they have sealed. I again lost 22 quarts of beautiful red beets. ...
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1 vote
1 answer
101 views

Can you preserve/can tomatoes of various sizes together?

I am new to canning and have a water bath canner. I have successfully (well...I think!) canned/jarred several dozen bread-and-butter pickles following a recipe I found in the official Ball Canning &...
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0 votes
0 answers
581 views

Is calcium hydroxide an acceptable substitute for sodium hydroxide for making century eggs?

Due to the difficulty in finding food grade sodium hydroxide and safety concerns, I'd like use calcium hydroxide instead. Specifically, some recipes call for a solution of NaOH and NaCl, would Ca(OH)2 ...
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1 vote
0 answers
49 views

How to best transport bulots - sea snails aka welks?

I've just bought 2 kg bulots in France and would like to drive them home over 1000 km. What's the best option to preserve them? freeze keep in cool* water (car has an electric but weak coolbox) cook ...
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  • 499
2 votes
1 answer
178 views

How does Ball mason jar size affect canning processing time?

I'm new to canning and food preserving and bought a basic starter kit including a water bath canner (I'll get into pressure canners later if I have success with this method). One thing that is often ...
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