I am gluing a ceramic plate. I wouldn't dream of using condensed milk on tile. I had read an article of some MIT students looking for a ceramic glue with certain chemical/physical properties for a project. None of the commercially available glues were acceptable. Then someone suggested something that their grandmother had used - condensed milk. It supposedly worked like a dream. But the article did not state if the product needed to be heated, etc. Any help would be greatly appreciated.