Depending on your oven, you can set the initial preheat temperature to be higher or lower than 135 °F (57 °C). The recommended threshold is 110 °F (43 °C) to 150 °F (66 °C). [5] X Research source
If you have a convection oven that automatically allows for air flow, then you can disregard this step. [7] X Research source
Depending on the oven, this process can take anywhere from a few hours to several days. Only use this method if you will be home for an extended period of time. [10] X Research source
It usually takes at least 3-4 weeks for peppers to air-dry. [14] X Research source
If the peppers are less than an inch in length, you may not need to slice them. [17] X Research source The seeds can be removed from the pepper slices prior to placing them in the dehydrator, though seeds leftover in a dehydrator can be used for cooking purposes. [18] X Research source
Depending on the specific machine, you may want to set your dehydrator to a higher or lower temperature. Check your dehydrator’s manual for specific instructions. [22] X Research source
Dried peppers can also be ground to make chili powder, which can last up to a year. [24] X Research source
