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Dehydrating foods is a great way of preserving it so that it can be used for a longer period. It simply involves the removal of moisture in the foods such as meat etc. so that one can increase its shelf life. Dehydrating of foods is slightly different from the traditional methods such as freeze-drying. Dehydrating encompasses removal of moisture from the foods. It also takes up less space as compared to other methods e.g. traditional canning. Foods which are dehydrated can typically last for up to one year or more.