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You can buy a unit that prepares jerky at home quite cheaply, some of which are also excellent for preparing tomatoes and fruit.

A few of many such units :
http://www.ronco.com/products/foodDehydrator.di4/5
http://www.butcher-packer.com/pg_jerky_supreme.htm
http://www.asseenontvandmore.com/bmotfamjerma.html