I use a metal scraper (no metal bristles) with extreme heat, plus a traditional root brush where the bristles are made of plant roots (as of old crowberry, nowa

I use a metal scraper (no metal bristles) with extreme heat, plus a traditional root brush where the bristles are made of plant roots (as of old crowberry, nowadays commonly rice root). Root brush doesn't tolerate as much heat as metal bristles but more than nylon.