Free: Contests & Raffles.
Are you talking about a vacuum dryer? Or just a standard dehydrator?A relative of mine did some last summer in a vacuum dryer. We used a little serrated pearing knife to cut a ring around the cherry. Then twist the two halves to split open. Then use your thumb to remove the pit from the half that has it. Then just lay out the cherry halves on the tray in the air dryer.I think they took a couple hours to dry. Maybe more. I don't remember for sure. But when they were finished they were like dry crispy candies.
I do ours at 165 degrees for as long as it takes to get to the consistency you want. Spray your trays with oil or you'll be hating life, even with spray they may still stick.It's a pretty tedious operation when done at scale. A good pitter that can do 5-6 at a time saves a bunch of effort.Pick, rinse, pit, cut in half, arrange on tray, repeat.