Here is a video that I have done for OvenCleaning.TV on How to clean the AGA cooker enamel top whilst the cooker is on. Really I am showing how I keep on top of our AGA, it is just a case of having a cloth handy to make sure it is kept clean. I also use the Astonish Enamel and Tile cleaner that I have in the video too. This works very well.
I hope to get some more videos on the www.OvenCleaning.TV site in the next week or so, so keep an eye out on the channel.