I love cast iron!

   We've all seen examples or heard stories about Grandma's cast iron cookware that's been in regular use since the Eisenhower administration or before. Long before nonstick pans (made with perfluorooctanoic Acid-or PFOA-which is a known carcinogen...yum!) became popular, cast iron provided the original nonstick cooking surface, and we've got news for you: it still works! While new nonstick pans' ability to repel sticky foods fades over time (often just a year or two), a well-seasoned cast iron pan will only get better with age, and will last you for a lifetime.
   This ultimate longevity is what makes cast iron such a great, green addition to any kitchen (or a great, green cooking option, if you've already got one or more). Imagine never having to replace your cookware again. Ever. While they do require a bit more maintenance than their chemically-enhanced counterparts, it's absolutely worth your while to have a pan or set of pans that will perform at a high level, under a multitude of kitchen scenarios, for you, and, eventually, your kids, and even their kids, too.
Follow these step 

1. First, if you find your cast iron needs to be stripped down and re-seasoned do not fear. All you have to do is place the utensil in your Self Cleaning Oven on the shortest cleaning cycle (usually 3 hrs. on most models), and it will come out looking like the day it came out of the mold. Allow it to cool overnight. Wash the residue off with WATER ONLY in the sink using a stiff abrasive pad. Make certain NO DISH SOAP comes in contact with the utensil during this procedure. If it does you will have to start over!!! Dry the cast iron utensil off with a paper towel, and IMMEDIATELY place BACK in the oven at 350 degrees Fahrenheit for 10 minutes or so.
2. Next, take the utensil out of the oven after the 10 minute drying time is complete, and lightly brush the utensil with a paper towel coated with Crisco or other solid cooking oil. Liquid vegetable oil will do in a pinch, but it's better to save the liquids until AFTER your initial seasoning. It is important in this step only to lightly coat the cast iron with a light, thin coat of oil until it only glistens. Do not allow any puddles or pools of liquid as this will cause problems at a later time.
3. Then, place the Cast Iron in the oven set to 500 to 550 degrees Fahrenheit with the COOKING SIDE FACING THE BOTTOM OF THE OVEN. This allows for any excess oil to drain off to the sides, and prevents pooling during the seasoning process. The higher heating temps allows for the oil to truly 'cook' as it should as opposed to just 'gumming up' at lower temps. Cook undisturbed for 1 hour.

Please note: During the previous step it will be best to turn off any smoke alarms in the immediate area as it may smoke quite a lot. Ceiling fans also aid in ventilation.

The above process is a one time thing. For the rest of your pans use, unless it gets rusty. All you do is rinse the pan with water when its still hot, then place the pan on a burner to dry. Then coat in a oil.
Sincerely,
Petra