Reply to "Drying Cookies in the Oven"

Perhaps also consider that the bleed may be caused by too much red gel colour in your royal and not your dehydrator at all. This is common with red. Also worth noting is that dehydrators with a motor at the bottom of the trays will never give as good a finish as one with the motor at the back. This is because the warm air blows across the icing and not towards the underside of the cookie. Hope this helps