Please note: these are handmade the measurements may vary on each individual Molcajete by 1/2 Inch more or 1/2 Inch less. Please season the molcajete volcanic inside rock, before using it, you need to season it by grinding rice or dry corn into the inside of the bowl. Spend as much time as you can grinding the grain or corn into the stone. Then, rinse the stone with very hot water and start another seasoning session. You should season the stone at least three before you use the molcajete to cook, by Border Merchant.