Does a plastic utensil swallow up taste and excrete it out like metal,or is it like glass. Also can plastic be kashered if it became treif? What are the sources that discuss this?
Can an 'AGA' oven be koshered? Here are encyclopedia and video explanations of what an AGA oven is: http://en.wikipedia.org/wiki/AGA_cooker http://www.youtube.com/watch?v=kxRp9b1yFGA