NB George wrote:
No such thing as a food-grade mineral oil. It's not a food. There is a pharmaceutical grade. Mineral oil is sold to irritate the colon and give you the runs. Sort of like bacteria on the board will, especially if they're protected from casual rinsing by the oil. Leave the board naked. It'll be "finished' with tallow later. Wipe with detergent so you can kill the bacteria. It will also emulsify and wash away the mineral oil. Make two boards, easily distinguishable from one another, using one for food which will be cooked, one for food which will not, and avoid cross-contamination.
I've got trivets Pa made thirty years ago in use here. Oak with BLO.
2 things here...detergent will not kill bacteria the only thing that will when wiping down cutting boards is a solution of water and bleach (this is what the health dept recommends...
Also there is a big difference between a trivet and a cutting board..using 2 boards is only needed when cutting meat such as chicken and then beef or bread items a quick wipe with Bleach/water mixture takes care of any bacteria...
Ron