I was recently gifted a Casa Maria Molcajete (I think ordered from Amazon). Whilst researching how to season, I read that some on the market are not actual stone, but are made out of concrete with various toxic binders (yay China!). Anyway to tell which I have?
I can see concentric circles in the bowl, which I thought was a good sign that it was carved out (albeit by a machine) rather than cast.
Any help would be appreciated!