Virtually Non stick cast iron cookware

[Haroun]

Try using Flax seed oil,(raw Linseed),you don't need food grade. After cleaning scrub with detergent to clean, warm slightly before coating and let soak for a while before heating to smoke point.
A well seasoned cast iron pan beats hi-tech coatings hands down and the extra mass provides even heat.
I use salt to clean the hard stuff like residue from fried beans. Cove pan, heat, scrub with wadded paper towel and rinse. a wipe with a bit of cooking oil on a paper towel is all that is needed to keep perfect.

You need food grade, or one that is certain not to contain dryers, which are lead in the old days, cadmium today. Raw linseed likely won't have dryers but going to a health food store & getting flax oil is safest. The process is putting a linseed oil finish on the metal. Coat it, warm it to under smoke point to polymerize, cool & coat, warm to polymerize....
VERY important to not use "boiled" linseed oil as it just about always has dryers