Mineral oil is a petroleum distillate... not good for food stuffs....you really should rethink that....

while there is a "food grade" mineral oil, it is not really a food stuff, but a certification that it is "safe" for consumption, meaning that if you eat it , you are not going to die...but is acts as a laxative, so you can guess the rest.... It is often used in wooden kitchen implements over vegetable oils because it is less likely to go rancid, or spoil... I wood rather use olive oil...but that is just me... your mileage may vary

Doc