Hello everyone (new here) nice to find a forum for Indians run by actual Indians (I hope).
Anyway, so I've been learning a bit about preserving food. Still very much a newbie but my purpose is to find people interested in similar things. +there's a lot of misinformation on the net started by American preppers who do really complicated things like 'Mylar' bags and vacuum pumps - most of it is fairly ridiculous (imho)!
Basically the idea is to remove
1. Oxygen - to kill insects, larvae
2. Remove moisture - to stop fungal growth
Sources of oxygen are external. Source of moisture are internal - via food and external.
So,
1.20L cannister
2. Small zip-lock bags.
3. Iron Powder and salt mixed and spread out flat in a small paper wrapper/envelope.
4. Dry foods
So put the dry-food in a zip-lock bag, put the envelope in it, put the zip lock in a 20L can - then pack it all with salt with a few more envelopes thrown in.
The scientific idea is that salt is hygroscopic and absorbs moisture seeping in - we can always heat it and dry it every few months. Salt+Iron powder absorbs oxygen and rusts.
(to dry wet foods you need a dehydrator but I've not actually got there yet) (hope you find this useful - let me know what you learn/try out please)