It really doesn't take much at all. Slice pears about 1/2 in thick. Soak them in lemon water for a few minutes. Lay them out on the dehydrator (about $50 at Bed Bath and Beyond, big investment, we got ours as a wedding gift)...I can fit about 12 pears at a time (3 to a tray). Then leave them to dry for about 8 hours. They come out just as sweet as can be. Great snacks.