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Food Dehydrator Re-think

by Rick
(From Container-Gardening-For-Food.com)

Food dehydrator plan 'A'  -  But will it work?

Food dehydrator plan 'A' - But will it work?

Ok, so I figured with all the food my garden will (hopefully) be producing this year, I will need some way of preserving it so it will last through the winter.

Freezing is one option, but doesn't work well for everything. Tomatoes for example, from what I have been led to believe do not freeze well, but they are very good dried.

Food drying is definitely something I would recommend, I’ve worked with dried foods before and it is a wonderful way of making natural foods last a long time. It also makes the food fun to eat. The kids will love fruit leather for example, they think of it as sweets or candy! A great (if a little sneaky) way to get them to eat some of their 5 a day!

Dried tomatoes are also extremely tasty. It seems the drying process concentrates their flavor.

I do have an electric food dehydrator, but it's noisy, takes a long time and uses a LOT of electricity, so I have been looking at alternative options from both a power-saving and preparedness perspective.

Drying using the power of the sun has been my focus.

My conservatory gets really warm when the sun shines, so I figured that keeping trays of food in there would be a good alternative. Space is limited, so I figured making use of the high roof area made sense as after all, heat rises. So I rigged up a large net into the roof and made some rectangular trays from wood and covered them with polyester mesh (fly-screen) see the above picture for the finished result.

It seemed like a good idea at the time, but the more I though about it, the more I was convinced that it wouldn't work very well. Air flow in dehydrating is the key to it working, and with this arrangement the air flow could be a problem. Also I figured the trays are too big and will sag under the weight of the food placed on them.

So for the past few weeks I have been trying to hatch a plan 'B'.

I finally decided to do the job properly, and have now opted to build a full size outdoor solar dehydrator. So far I have worked solidly on it for the past two days and hope to get it finished later on today. It is based on the beer-can solar furnace design and looks like it should provide an efficient service - obviously the proof will be in the testing.

I videotaped the entire process as I have been constructing it, so hopefully I will be releasing a 'How-to' video shortly.

Watch this space! or subscribe to my Rickvanman channel on YouTube, where I will be uploading the finished video.

Regards
Rick





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Food Dehydrator Re-think

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Apr 27, 2010
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Desert king is actually the king of the cold rainy maritime climate...
by: esmeralda

the poorly named "desert king" fig does ESPECIALLY well in our cool, wet climate, and since I've been studying your temperature/ moisture range, and have determined that our weather is virtually identical I suspect that it would do exceptionally in your area too.
http://tallcloverfarm.com/?p=348
That's a little write up on how they like cold wet climates. It's the variety that grows in my yard, and I can attest to it's glorious success in acidic, cruddy soil.
Also I'm looking into growing the minimal effort plant known as "hardy kiwi"- they apparently produce up to 20lbs of fruit per plant per year when mature. Hot damn! I love fruit! And I love plants that I don't have to do anything at all to! hee hee!
oh, and those rasberries are only being propped up by the yard debris bins- the vines are so heavy they're pulling my fence posts down and have to be propped up, so I'm using those big bins to keep them from tearing my fenceposts out of the ground! HAHA!!!!

Oh, and thanks! I do love my plants, and they seem to like me back!

Apr 27, 2010
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RE: Dehydrator and hot conservatories...
by: Rick

Hi Andrew,
Yes air conditioners are massive consumers of power. I can't see me ever owning one.

Sounds like an interesting setup with the heat soak - sounds a bit like the economy7 radiators my sister has in her house - they heat up during the night when the power is cheap, then stay incredibly hot all day.

Apr 27, 2010
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Dehydrator and hot conservatories...
by: Andrew Pullen

Hi Rick,

Reading about your electric dehydrator reminded me of a friend who installed an air-conditioning unit in his conservatory, ran it for a few weeks during summer then got the fright of his life when he got his electricity bill through which looked like a phone number! He fitted blinds and passive ventilation which kept the summer temperatures down to pleasant levels which cost nothing to run. A conservatory is such a good thing to have since it acts as a buffer to extreme temperatures (so long as blinds or other form of shading is used), they act as greenhouses so seeds germinate early, and make good natural dehydrators.
I have seen plans that use a heat soak, ducting, a 12 volt computer cooling fan and small solar panel and battery that together pump hot air through a heat soak which can be an insulated box a meter on each side that is filled with either powdered glass, gravel, or any other material that has high thermal mass. During the day the pumped hot air gradually heats up this thermal store and then during darkness the fan then circulates air through this hot storage to heat up the air to prevent cold or frost damage to plants etc. I've seen the method used on a greenhouse and alternative methods where two flat plate radiators painted matt black or bolted to a wall to heat up during the day then emit heat during night time.

Apr 27, 2010
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Rasberries look fab!
by: Rick

Your rasberries look fab! Grown in a wheely bin - now THAT is a container! LOL!

I wonder if I have space for a fig tree here? I wonder how they will fair through the British winters? Hmmm - might have to do some studying.

Apr 26, 2010
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raspberries and figs and blogs, oh my!
by: Esmeralda

Yeah- there are so many ways to preserve food- I mean, if you think about it refrigeration is a very new thing- our ancestors had to be pretty darn creative!!!!
btw, here's a pic of the raspberries- and sort of one of the fig tree
http://esmeraldasquietlife.wordpress.com/2010/04/26/nonsequiters-in-the-soil/

Apr 26, 2010
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Your Fig Tree Sounds Fabulous!
by: Rick

Sounds like you're going to get a another glut this year, and your fig tree sounds fabulous!
Thanks for the tips and suggestions. I'd never have thought about saurkraut - I don't know too much about it but the internet is great for learning, so I'll have to look it up.

Pickling is something I'd not considered, although I do like pickled onions, so if the food production goes the way I am hoping it will, I may be able to experiment. The white beetroots spring to mind here. :o)

Apr 25, 2010
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Re: your food dehydration plan
by: Anonymous

As with many home gardeners, I too have encountered the issue of "what to do with all that..." in my case, it's figs. Even before I started gardening, I was blessed with a hyperproductive cold weather friendly fig tree that produces pounds and pounds of figs every year. More than myself, my friends and family, and the little girls next door can hope to keep up with.
A couple years ago I planted some raspberry starts, thinking in 5 or 10 years I'd have a nice big raspberry patch- but this year there are so many of the things that they are *actually pulling down my fence*. I'm tired of drunk wasps veering wildly about the yard- and especailly with a new baby on the way and a yard filled with container-foods, I need to focus on a way to store all that fruity goodness, and hopefully I'll have vege leftovers too!
I have a nice, smallish, pretty efficient electric dehydrator which I plan on using like crazy (though your au natural one looks totally AWESOME too, as well as freezing stuff- and I even have an additional idea/ ideas for you- Pickling!!! I know it seems a bit silly, and if you don't like vinegar you're SOL, but beets, garlic, pearl onions, cauliflower- these are things you can see on store shelves pickled- but I bet you a dollar that peppers, turnips, broccoli, carrots, parsnips, rutabegas, etc etc etc- would all do well pickled.

Also, for some foods like cabbage, kraut is a great option. My grandmother makes LOADS of saurkraut and canned/ jarred foods. She's exceptional at figuring out ways to make foods last a long time that would normally just decay. You can get really creative with krauts, apparently- though I haven't made ANY myself yet- I hope to.
You can make sauces and pastes if you're up to jar things, as well as jams and marmalades and whatnot.

I'm trying not to "count my chickens" but I am absolutely hoping that I'll have so much left over that I have to get really creative!

good luck with your drying endeavors, and with luck I'll make so much fig leather that I'll be able to send some all the way to Jolly ol England and share with you and your family for being such gardening inspirations to me!

Cheers!

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