Flaking
I needed to season a piece and decided to give this some love too. It has been used on a griller over hot coals, and the back of it looked like it didn't like taking that radiative heat head on.
So I'm on my 4th layer if seasoning it with avocado oil. 450 degrees, 2h, then let it cool overnight with the oven. The back is looking much better, but the cooking surface just began flaking (see picture). I've brushed it with a plastic bristle brush. Pretty sure the light spots are the metal underneath.
What went wrong? And how to fix this, do I just keep on seasoning?