Flake white . . . mull your own?

[Allan Rahbek]

I imagine that the white lead pigment was first seen on some lead that was laying on a dunghill or maybe in connection with some sour vinegar.
These observations would easily lead to the conclutions necessary for the process that has been used for more than 2000 years. It was described by Greek Dioskorides 2200 years ago that it was made the same way and used for medicine !!!