Tales from the Dehydrator: No. 3 Beans, Apples, Raspberries & Blueberries

My dehydrator, an Andrew James model, is marketed primarily as a tool for dehydrating fruit and vegetables and making a bit of jerky. It’s not explicitly promoted as a device for dehydrating wet food into backpacking meals. Nevertheless, before buying I’d seen that someone in one of the Facebook groups had successfully used one for this purpose, and I even managed to find a review of the product from someone who’d done it (although this took a lot of wading through fruit and jerky-based reviews). This is important as the Andrew James costs a mere £40, instead of the £150 plus you’d have to shell out for an Excaliber, for instance. So far, the cheaper solution has worked out fine.

Given that the popular thing is to use this for fruit and veg, I thought I’d give it a go.

Green Beans

The other week when I was preparing my double batch of Beef in Red Wine, I also steamed off some frozen green beans, taking 160g (two of the standard portion sizes per the pack), steaming them and then bunging them on the machine to see what happened. There’s no detailed recipe with this one.

160g of green beans cooked down to 128g just going on the dehydrator
160g of green beans cooked down to 128g just going on the dehydrator

I dehydrated them at the same time as the Beef in Red Wine, so left them on there for most of the 12 hours that was running. The result was then vacuum packed as a single portion.

Apples, Raspberries and Bluberries

I’d been itching to dehydrate some spare raspberries, lured by the image of including them in a porridge mix with some coconut. Sadly I was down to a mere 9 raspberries so bought another punnet so I’d have a decent quantity. With most of a pack of blueberries lying around, they went on too.

While I was at it, I also quartered an apple and then sliced each quarter as thinly as I could, doing half of them with skin and half without. Lemon juice was added to slow the oxidisation (browning). Just to see what happens. These went on the top layer in the dehydrator as, according to the manual, they only take 5-6 hours compared with 8-26 hours for the berries.

1 dehydrated apple
1 dehydrated apple

These looked fine after 6 hours and pretty much like the ones you can buy in the shops. They’re pliable – the best I can describe them as is like crisps made out of foam.

The raspberries, however, were a different story. Twenty-four hours in and a few had leaked a bit of juice, a token effort at showing loss of moisture. Twenty-nine hours in, I stopped the machine. The older raspberries which had seemed to be making better progress now had crispy, almost burnt, bits on their undersides. The newer ones just felt odd – still soft and when pressed clearly still with some moisture in. They also tasted terrible. Even rehydrating one didn’t improve things. I packed these up in a slightly different container – the bin.

The blueberries had shriveled a bit after over a day of intensive heat, and reduced in size a bit. But they didn’t look good either. I added them to the raspberries.

It took a bit of scrubbing to get the dried on raspberry slime off the lining sheets
It took a bit of scrubbing to get the dried on raspberry slime off the lining sheets

So all in all, the fruit wasn’t a success. I think the blueberries really do need the shock and awe of being plunged in boiling water then immediately into iced water before going on the machine. Either that or a nuclear blast. The raspberries, I genuinely don’t know what didn’t work as I followed the guidelines.The only thing I can think off is that I should break them up a bit first rather than attempt them whole. I will try again sometime as the lure of raspberry and coconut porridge is just too strong.


5 thoughts on “Tales from the Dehydrator: No. 3 Beans, Apples, Raspberries & Blueberries

  1. Well, worth try,but I find friut always seems to be difficult. The other thing is that the heat kills off the
    essential enzymes in the fruit. I have a vacum pump thingy which sucks the air out of the plastic box
    in which I place my various berries. From fresh they keep well for several days . Far superior to freeze
    dried ones as well. Now Fuzion foods have gone under I find it very difficult to obtain a decent ‘ commercial ”
    freeze dried product which does’nt break the bank You can also get some excellent preserving bags from
    Lakeland which stop veg from going off for quite a while.


    1. I much lament the passing of Fuizion. They made the best dehydrated meals I’ve had. With regard to the fruit thing, I guess what I’m really after is the flavour more so than the nutrition, as the quantities I’m likely to use won’t make much different nutritionally. Going to try with smaller pieces, maybe even grind down to a powder.


  2. Breaking the berries is what I would have suggested, so the water can get out more easily. In fact, I’d probably puree them and go for a fruit leather.

    The dehydrator is great for fruit which has gone over. Dehydrating brings back some texture and you have the enhanced flavour of very ripe fruit. A treat to chew while hiking in a cold wind.

    Personally, I skin the fruit first as I suspect dehydrated skin might not be very nice. Works for bananas, pears and those mouthful-off-paste apples which supermarkets have stored for years.


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