Help/advice non-shiny spots not get seasoned for cast iron???

[chueh]

I have always had some non-shinny spots after washing the skillet. The spots seem changing from one wash to the next. I did add oil to reseason again each time. For some reason, there are still spots existing each time, although they seem to be smaller each time.....

I'm not sure if they ARE the spots which have never been properly seasoned or what happened....

Any suggestions or comments? Waht are they exactly, and what can I do? Or do I just keep reseason each time until all the non-shinny spots gone?

Thanks

 

[thymeless]

IMHO, that's just the nature of the product. Your seasoning and finish will vary with time and use. Carbon steel patina varies even more.

just think of the patina as something alive that will change with use and care.

 

[Andy M.]

One possibility is that the dull spots are burned on food residue. Using a teflon safe scrubber, scrub the spot vigorously.