Making and Knowing
A minimal edition of BnF Ms Fr 640 in English Translation

- - - - - folio image: 075v - - - - -

Recipe for coloring all wood

To make it black, the wood needs to be soaked in olive oil and tough meat in a similar case for four or five days, then boil it in where the wood has soaked for one hour, then take it the wood out of the oil. Take some natural sulphur if possible otherwise take another

- - - - - folio image: 076r - - - - -

sulphur. Cover the aforementioned wood with this powder, until it cools, and bring it back to a boil. Upon boiling one will see whether or not it is black enough. If it is not, take the aforementioned powder and apply some over the wood and boil it.