Abstract: A food dehydrator apparatus comprising a plurality of modular food trays, each tray comprising a generally horizontal drying rack having an upper and lower surface and openings providing for air passage extending generally vertically through the tray, a wall located at the periphery of the tray, the wall extending generally vertically at the periphery, and having a top and bottom edge, and an inner and outer wall surface, and a plurality of legs extending from the lower surface of the tray and below the lower edge of the wall, where the trays are stackable, whereby when a first tray is adjacent a second tray, the top edge of the wall of the first tray and the bottom edge of the wall of the second tray form a close fit preventing air passage therebetween, and where when the first modular food tray is position with the legs set on a substantially flat support surface, a gap is formed between the wall bottom edge and the support surface.