You dehydrate them, then rehydrate in hot water for 1/2 hour. Then blot and layer in
half pint or other smallish jar with chopped fresh herbs like parsley, rosemary, basil, marjoram, oregano, thyme. throw in some pressed garlic, hot pepper flakes. Pour oil over all. Refrigerate for several weeks and they are ready to use. they only keep a few months so watch for mold on top. Don't make more than you will use in a short time. You can use the flavored oil in salad dressings. Or just rub it on your face!
I usually dry lots in season and store them in the freezer and make this up as needed.