A couple more questions. if I were so do a HP soap in the crock pot, could I use a crock pot liner? Seems like that would make clean up much easier, but it may be very wasteful on the soap. Also, if I use my crock pot to make soap, then can I use it to cook food in? What about my stick blender, can I use that for food items? Or if I did HP in the oven, could I use my pan for food? It seems like I should be able to because lye is used for food items as well... pretzels, olives, hominy etc.