Hi guys I'm brand new here, lately I have been cooking up a storm. I bought this molcajete to perfect my salsa. The lady at the local flea market swore it was real lava rock with no cement. Been seasoning it for two days with no success it's still powdery and a little gritty, it stinks like sulfur when I grind on it. I'm starting to think this is a cement basalt mix fake.