I just consulted my favorite nutritionist (wife). :-) She said mineral oil should not be a problem. In amounts of a couple tablespoons, it acts as a laxative. She also noted that mineral oil is a frequently used preservative on knives. In her hospital kitchen, she uses cooking oil at most on instruments used in preparing food. She usually does not need such preservatives.<br><br>Incidentally, has anyone used Beakfree CLP on knives & other tools. Its label says that is nontoxic. <br><br>John