So today.. after smoking for a bit I decided to inspect some of the bowl's I had.
They didn't look too pretty with the black inner ring of death as I like to call it from bowls and bowls of shisha being burned through it.
I tried scraping it off with a knife to no avail, as well as the lemon/baking soda mix some have described here.
I was wondering if boiling a clay egyptian bowl and medium phunnel bowl would be bad news bear?
I mean, i'm not sure at what temperature clay breaks at, but I know they fire it in kilns at thousands of degree's. Opinions?