Prepare a cold water bath with one tablespoon of lemon juice to every one cup of water, or prepare Fruit Fresh bath, according to the directions on the canister.

Wash and then cut the apple wedges into 1/4 slices, discarding the seeds and core. Leave the peels on for extra nutritional value. Drop the apple wedges into the cool water and stir them so the water covers each slice. The citric acid in the lemon (or Fruit Fresh) stops them from turning brown. Soak for about five minutes.

Patting the apples dry with a clean, lint-free dish towel, line the dehydrator trays with the slices in a single layer. Don't stack or over crowd them, or the air will not circulate properly.

Set the dehydrator to 150° for seven hours. Check them at the timer to make sure they are dry and slightly brittle. If they still have too much "give," then they are holding water. Dry them for an additional thirty minutes.

Open the door to your dehydrator and let the fruit cool for at least fifteen minutes before packing them into storage bags or a mason jar.