I just got myself a new wooden board. I have been told to put some olive oil onto it and let it sink in for a few hours first. But now I'm reading from sources that I should be instead using mineral oil. Which is true? Is it ok to use Olive oil?
Use food grade mineral oil
While one could use any edible oil (assuming frequent washing as many go rancid) to condition a wooden cutting board, food grade mineral oil or "butcher block conditioner," which is food grade mineral oil with waxes, is preferred because it will not affect the flavor of foods cut on the board.