Wash the pan with hot water and a small amount of mild soap if needed
Dry it completely
Apply a very thin layer of oil to the entire surface, inside and outside
Wipe off all excess oil until the pan looks nearly dry
Place the pan upside down in an oven
Put foil or a baking sheet on the lower rack to catch drips
Heat the oven to 450°F to 500°F
Bake for 1 hour
Turn off the oven and let the pan cool inside
Repeat the process 2 to 4 times for a stronger seasoning
Use the pan regularly to maintain the seasoning
Dry it immediately after washing
Rub on a light coat of oil after each use if needed