If you're drying in pieces or slices, remove the stems of the peppers/chilies and remove the seeds.
Cut in into pieces/slices about 1/2 inches thick
Arrange the peppers on your dehydrator so that there is space around each piece/slice, and they are not touching.
Set your dehydrator to the "fruit/vegetables" setting (or 135˚F degrees).
Rotate trays every few hours.
Peppers/chilies are ready when pieces break or snap instead of bend. If your pieces are thinner, they will feel brittle when ready. (8-12 hours depending on conditions)
Notes
If possible, move your dehydrator outside to a safe covered space. The smell of drying peppers can be overwhelming to many people.
Dried peppers are 3-4 times stronger than fresh.
Dried peppers/chilies will rehydrate to ~80% of the original size when soaked in hot water for ~10-15 minutes.
Oven-Drying Instructions: Follow the prep/cutting instructions above and then place pepper slices on baking drying racks set on baking sheets.Place in the oven at the lowest temperature possible (usually 140-170˚F) and prop open the door with the handle of a wooden spoon. This allows condensation to escape instead of just settling back onto the peppers. Bake for 5-8 hours.Air Drying Instructions:
To safely air dry your peppers/chilies, you’ll need 3-4 days of favorable weather. The daytime temps should reach 90˚F or above, and the humidity levels should be no higher than 55-60%.
You can slice the peppers/chilies or dry them whole.
Place peppers/chilies on food-safe screens - OR - use a large needle and thread to string the peppers together through the stem.
Place outside until fully dried. You should cover them with a clean towel/pillowcase/muslin overnight and bring them inside at night if nighttime critters will mess with them.