It is my day off and I was going to try and do a double batch today. Both of them would be a partial boil. I have I 22quart stainless brew pot, but I was curious to know if I could use my 30qt canning pot. The thing I was concerned about with it is that coating they put on it. Would it be safe to use it, I really don't want to drop more money today on another piece of cookware.