Wash the pan with warm water and a small amount of mild soap
Scrub off any rust or old residue
Dry the pan completely
Preheat the oven to 450°F to 500°F
Apply a very thin layer of oil to the entire pan, inside and out
Wipe off all excess oil until the surface looks almost dry
Place the pan upside down in the oven
Put foil or a baking sheet on the lower rack to catch drips
Bake for 1 hour
Turn off the oven and let the pan cool inside
Repeat the oiling and baking process 2 to 3 times for a stronger seasoning
Use the pan regularly to maintain the seasoning
Dry the pan immediately after washing
Rub a light coat of oil on the pan after each use