Newf, it depends on what the bowl is going to be used for. If it is a bowl that will be used on a regular basis, and used for food purposes then I agree mineral oil is the way to go. But, if the bowl is going to be used for decorating or display purposes, then a different type of finish can be used. Personally, I like to treat my bowls with a coating or two of BLO, then a couple of finish coats of Lacquer. I don't turn large bowl yet, and the ones that I do turn are mostly used as candy dishes or display purposes. With finishing this way, I've never had any issues.
Len