I tried that, multiple very thin coats, and it all flaked off down to bare metal. Flaxseed is too hard. Regular old canola oil works great. I make scrambled egg

I tried that, multiple very thin coats, and it all flaked off down to bare metal. Flaxseed is too hard. Regular old canola oil works great. I make scrambled eggs in mine when we go camping. I got a nice, food-grade flaxseed oil. The other myth is that the pebbly surface is non-stick. I used to work at a casting plant, that's the natural finish from sandcasting. That doesn't mean it's functional. Sanding down the casting surface to a smooth working surface takes less than an hour and lasts a lifetime.