Certain varieties of popcorn can be dried at home. The best varieties are Japanese Hull-less, Hybrid South American Mushroom, Creme Puff Hybrid, White Cloud and Dynamite.
Leave the ears of popcorn on the stalks until the kernels are well-dried. Harvested ears of corn can be air-dried at a temperature below 130ºF. When the kernels are dry, remove them from the ears and package.
Dried corn will appear shriveled. Pop a few kernels to test. Popcorn will dry down to about 10 percent moisture. No pretreatment is necessary.
This document was extracted from "So Easy to Preserve", 5th ed. 2006. Bulletin 989, Cooperative Extension Service, The University of Georgia, Athens. Revised by Elizabeth L. Andress. Ph.D. and Judy A. Harrison, Ph.D., Extension Foods Specialists.