Fashion for food.
The artwork will retain its beauty and be food safe provided you do not cut over it or scrub with abrasives.
We recommend refreshing your board with tung oil should it start to look dry after extensive use. It is available from most kitchen shops or your local hardware store. Grapeseed or coconut oil can be used instead, however, they are less penetrating.
To apply simply rub on with a sponge or clean cloth, leave for 5 minutes, then rub back vigorously with an absorbent cloth until all excess oil is removed.