He used an aluminium pan. Aluminium pans are not used for many things (jam-making being one) because they are too reactive, and this is another purpose for which they are not fit. So: Don't do it at all, if you do, don't cook it to condense it, and if you do, don't use an aluminium pan.there was a report in the case studies thread of a guy who used to put it in a pot/pan and put it on low heat and let it condense and he would shoot the condensed liquid and something happened to him (i dont remember what) and he ended up in the hospital and he had been doing that for like a month and metal from the pan actually ended up in his end solution and had microscopic pieces of metal flowing through his blood stream.. i haven't heard anything else about it.. check the case studies thread, and whatever you do DONT DO IT PERIOD nevermind COOKING IT TO MAKE IT MORE CONDENSED!