Understanding Stovetop Cookware By Samuel Lloyd Kinsey (slkinsey)   In various discussions about cookware over the years, I have found that many people care passionately about their cookware -- be it All-Clad, heirloom cast iron, heavy copper, or Calphalon -- but don’t really understand their cookware. This article, I hope, can be a first step towards transforming you into the equipment geek I know is lurking inside. Or at least helping you make some informed choices the next time