I have an old and heavy (8 kilos empty) brass pan that I use for jam-making. It is ideal for the purpose, the thick brass bottom preventing any burning or sticking while boiling jam and it is big enough to make 20 pounds of jam at a single boiling. I have used it successfully with a gas hob and latterly with a ceramic electric hob; but of course now that we have a new induction hob I have to think again. I don't want to give up the brass pan if at all possible. I have bought one of those flat induction-hob-suitable adaptors which go between the induction hob and a non-induction-type pan, of a size to suit the bottom of the brass pan. I have taken a hammer to the bottom of the pan to make it as flat as possible -- it's now within a millimeter or two all over. It works, but the adaptor gets hotter than I think is safe for the surface of the hob, certainly well over 100 degrees C. The problem, of course, is poor thermal contact between the flat adaptor and the not-quite-flat pan. I hesitate to grind the pan flat because, thick though the bottom is I might end up with a hole. And I doubt if it is practicable to braze or solder a thick flat copper sheet to the pan because it would need to be in metal-to-metal contact all over to achieve anything So does anyone have a solution please? Many thanks in advance.
Stephen