My neighbor does them sometimes. She says break the stem back a ways from the gourd so it has a good size piece still on it. If you don't leave some stem she says they will rot. Then just put them in a box in a dry place until you can hear seeds rattling inside. They get moldy on the outside as they dry. Then you have to mix a mild bleach solution and scrub them clean removing all traces of mold. Let air dry and then do whatever you want with them. She leaves hers to dry over the winter and cleans them up in the Spring. Hope that helps a little, maybe someone else will be able to tell you more. Kathy