I have recently started using cast iron exclusively! I have a skillet that is over 100 years old..its surface is smooth as glass. You can heat it on your coals..however you will get lots of black on your pans. I clean mine at home..in the self cleaning oven..it will smoke up your house! After cleaning..remove from your oven after it has cooled..taking it out too hot can cause it to crack! Season it with whatever you choose..Crisco, vegtible oil, then wipe it real good with a paper towel.. inside and out..leaving too much oil on it will result in a sticky mess! At this point I spray mine with Original Pam..after each use..then wipe down..ready for next use!