McCoy vintage bowl is magnet for coffee in dishwasher. Any ideas why?
I recently picked up 2 cute old McCoy bowls at a vintage housewares sale. One of them ALWAYS comes out of the dishwasher covered in coffee spots. It is bizarre and gross as it is the only thing in the dishwasher to be speckled with coffee. Obviously, now we handwash them, but I'm so curious as to why. Any explanations?