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17 votes
2 answers
3k views

Does the volume of air in an air tight container affect food shelf life?

I'm specifically talking about storing tea bags here, but equally any other dried foods. I'm trying to switch to buying certain things in bulk, so I'm trying to understand some basic principles. I ...
Roger Balfour's user avatar
0 votes
2 answers
320 views

Orange juice preservation by chemical presevatives

How much Sodium Benzoate should I add to preserve 200ml of Orange juice?
Meherin's user avatar
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 ...
onad's user avatar
  • 1
15 votes
2 answers
3k views

Repackaging shelf-stable products

For products that start out shelf stable but are labeled "refrigerate after opening," I'm wondering if it's possible to safely return them to their shelf-stable status to save refrigerator space. A ...
Jeff Axelrod's user avatar
  • 4,959
0 votes
2 answers
184 views

Cooked food / heat and serve meal, long term packaging

How does package food producers such as "Seeds of Change" or "Pacific Foods" package their food to keep for up to 15 months and store without refrigeration? What consumer, or DIY approach, most ...
user289394's user avatar
-2 votes
1 answer
895 views

When is the expiry date? [closed]

Honest to god, I tried so hard to identify it. I do see JAN 17 but I'm not sure if its January of 2017 or January the 17th. Plus I see 00:42 there but I'm not sure what it means, but I have a feeling ...
user3412975's user avatar
6 votes
3 answers
8k views

Why does food spoil in the freezer?

Many recipes suggest storing perishable food, such as left-over chicken stock, in the freezer for up to 2-3 months. Why could one not store it frozen for longer, surely bacteria and mould cannot grow ...
ScarletPumpernickel's user avatar
2 votes
3 answers
20k views

Can I purify / kill germs in a water to make it drinkable by putting it in a freezer?

I've conducted a research on how can I purify the water to make it drinkable and the results are many, but most of them says that drinking a freeze water can cause cancer to us. I am using a freezer ...
Cary Bondoc's user avatar
1 vote
3 answers
20k views

How to fix ghee which partly turned white and smells rancidly?

A friend of mine has mistakenly stored his ghee in a bowl which was not quite hermetic hence exposed to oxygen and the sun light. The result is that the ghee turned white and is rancid. See the ...
Ilya Shinkarenko's user avatar
67 votes
1 answer
78k views

How long can I store a food in the pantry, refrigerator, or freezer?

How do I know if a given food or ingredient I have is still good, or if I should discard it? How can I best preserve a food or ingredient? This broad question is intended as a "general reference" ...
derobert's user avatar
  • 13.3k
8 votes
7 answers
33k views

Minimum procedure for sterilizing mason jars for canning

My wife and I are about to do some tomato canning tomorrow. We have a bunch of mason jars that we didn't have time to sterilize. She thinks that just washing them in hot water is enough. After ...
milesmeow's user avatar
  • 4,274