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2010/12/13

dry food storage

How to dry foods
Drying foods is often an overlooked method of preserving your harvest.



For centuries, a common method of preserving food has been through drying. It is both convenient and economical, as no special equipment is needed. foods can be dried outdoors, in the sun and air, or indoors, in a commercial dehydrator or oven.
When food is dried or dehydrated, 80-90% of the moisture is removed. The removal of moisture keeps the food from spoiling and allows it to be stored for a very long time. Other benefits of drying are that the natural sweetness and sugars of food remain as well as many natural vitamins.


To dry food outdoors you really need to live in a dry climate where sunshine is consistent. If you do live where the growing season is long, outdoor drying is very convenient. There are some vegetables that can be dried in the garden where they are growing. These are peas, beans and onions.
Peas can be left to dry right on the vine. When dry, you can remove them, pods and all, and store them in a container with ventilation. Many recommend a mesh bag. When you want to eat them simply hit the bag several times to break the shells off.

Beans (such as wax or green beans) can also be left to dry on the vine, but require more of an effort before storing. Remove them from the vine, blanch them in boiling water, then spread them out on a cookie sheet and bake at 175 degrees for 15 minutes before storing them in a cool dry place.
Before attempting to dry other vegetables or fruit they must be prepared, and usually you'll want to remove the skins. To do this, immerse the food in boiling water for 2-3 minutes, then immediately immerse them in cold water. At this point skins can be gently removed.
Other vegetables or fruit that can't be dried on the vine can be dried outdoors on homemade screen trays or storage containers.  It should not sag when food pieces are placed on it. When you want to dry your food, put it on the screen so that no two pieces are touching. Set the corners of the tray or storage containers on wooden blocks so air can flow underneath it and cover food with cheesecloth, held up off the food by wooden blocks placed in top corners of tray or the storage containers.
If you know you will have warm, dry weather you can place tray or the storage containers on a rooftop or stove or pavement. At night cover them with plastic if you don't bring them in. Although outdoor drying is easy and convenient it does have its drawbacks. Continual exposure to sun and air causes greater vitamin loss.
Now, if you live in a geographic zone where weather is unpredictable and inconsistent, like the other 2/3 of the world, you will want to dry your foods indoors. Indoor drying is faster, which allows food to retain more vitamins.
Food dehydrators can be purchased in most department stores and come with their own instructions. But if you're not ready to make that investment there are a simple methods of drying that one can easily do at home. They require more physical and household energy, such as the dry food storage containers. There is a good vacuumsaver food storage containers can be your good choice.
Take a container and line it entirely with thick foil. Place a single light bulb inside the container but arrange it so it does not touch the container or foil. Research shows that a long life bulb in a porcelain bulb socket is recommended for safety. Find a cookie sheet or baking tray that will fit snuggly into the top of the container and blacken the bottom of it with appliance paint.
Another, simpler, way to dry indoors is in your oven. Preheat to 145 degrees. Place you produce on baking sheets, with no pieces touching, and put in oven. Leaving oven door open only slightly, reduce the temperature to 120 degrees, then increase it slowly to 140 degrees. Food needs to be exposed to 140 degrees for at least half of the drying time. Food should be turned or shifted every so often so it dries evenly.
The drying times for some common foods are as follows:
Apples: 8-12 hours
Beans: 10-18 hours
Broccoli: 12-15 hours
Brussel Spouts: 12-18 hours
Carrots: 10-13 hours               
Celery: 10-16 hours
Corn: 12-15 hours
Grapes: 15-20 hours
Peaches: 36-48 hours
Spinach: 8-10 hours
Squash: 10-12 hours
Tomatoes: 10-18 hours
To store your dried food the commercial plastic storage bags are best. Keep it in a cool, dark place. You can also place it into the vacuumsaver storage containers to keep the dry food longer.
Drying food so that it is "just right" takes some experimentation but, once you know how to do it, it enables you to enjoy your harvest all year long.
Reference from : http://www.essortment.com/

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