Hi a colleague of mine from a Bushwalking club I'm in says that the higher acidity of the dried food the better it keeps even without refrigeration. He worked at the DPI in victoria so did have some real life experience and science behind the claims. Most vegetables and fruits are acidic so are easy to keep. Air is best expelled out of the storage bag and one of the vacuum ones are good (I use a Kogan one but Aldi also have them from time to time) my friend used a device he made with foam rubber stuck on the inside of a hinged "sandwich' where you just put it in and squeezed out the air (he still had a bag sealer). Sometimes the food you dry is so very dry and sharp it cuts through the bag and lets the air in. I have started to put the dried food in a little paper towel to protect it a little more without increasing the weight too much and you can write on the paper towel what it is (and how many serves).
For any meats make sure you trim off all the fatty parts & skin (if chook) and slice or mince them finely as the dehydrate and more importantly rehydrate better. If it all clumps up into big hard lumps you can put it through a food processor or one of the old fashioned hand mincers to break it up a bit more finely. Ok you wont get a nice rehydrated roast beef slices and spuds and gravy but it will taste like you like it and you know what you put in your own food. A tip if you want a nice smooth or creamy finish to your rehydrated food is to add a little amount of chick pea flour (or blitz up some tinned chick peas) as you are making the meal before dehydrating it. I totally agree with all of the the other advice given too. I still have not made a cosy for my pot though I must do that and save fuel.
Cheers and welcome to the dehydrated food users group (secret handshake details apply though

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