John Boos Mystery Oil is recommended for care of tops & blocks that are used as a working, cutting surface. This fine oil is a mixture of mineral oil & beeswax, and will give your John Boos product the same quality finish as the factory.
A minimum of once a month (depending upon the use and household conditions), apply an even coat of Boos® Mystery Oil to all surfaces of your wood cutting board using a cloth or disposable towel. Allow the Mystery Oil to fully penetrate through the wood fibers overnight, then wipe off any excess oil. Apply additional oil to any visible dry spots or for any other necessary reasons. For additional protection, it is recommended to use Boos Block® Board Cream to seal the top of the wood surface in conjunction to the Mystery Oil.