​We don’t recommend those more hybrid pans because, after testing the thermal conductivity of several copper cookware lines, we found that a majority of these copper/stainless-steel pans do not perform any better than their stainless-steel counterparts, which cost quite a bit less. This is because the stainless steel cladding diminishes the copper’s responsiveness. They may heat up a bit faster, but they won’t do so evenly, leaving you with greater temperature variation on the surface of the pan (not ideal).. In terms of thermal conductivity, tin lined copper is the undeniable winner. These pans heat up and cool down fast, yet the temperature across their cooking surface remains remarkably even. This is that reputation for precise control in action. We’d recommend the Historia line from Ruffoni for tin-lined copper pans. Not only are they beautiful, they exhibited quantitatively superior performance in how they responded to changes in heat.. Cooking with tin is not as scary as it sounds, but if you don’t want to play that game, Mauviel’s M’150 line is the next best thing. Consisting of 90% copper and only 10% stainless steel, these pans heat faster and more evenly than stainless-steel cookware (just not as well as a tin lined pan.) Copper cookware enthusiasts will tell you that the more copper the better with a pan, and put a lot emphasis on the thickness of a pan. The thing is, copper is also quite heavy, and maneuverability is just as important a factor in a pan as how well it heats. That’s why we prefer Mauviel’s 1.5 mm thick pans opposed to their heavier stock. We’d say you should only consider the thicker 2.0 or 2.5mm cookware if you plan on having the pan over heat for a really long time—like if you’re making stock on the regular.. How we picked the best cookware sets. We had a big conversation on staff about what the most necessary components of a cookware set are. There were a lot of opinions and hot takes, many of which resulted in fantasy cookware sets that aren’t actually available anywhere (much to a couple of enthusiastic staff members’ chagrin, there are no stainless-steel cookware sets that feature rondeaus or Dutch ovens). We analyzed the available assortment of cookware sets online, taking note of the most common assemblages, and tried to identify redundant or unnecessary pieces. We came to the conclusion that it would be best to start with the fundamental pieces of cookware you’d most likely use, and encourage expanding a collection based on your needs on a piece-by-piece basis.. For selecting specific lines of cookware, we used our testing data for previous product tests to inform our recommendation choices, as well as the industry expertise of the professionals in our Test Kitchen. For the tests and the methodologies we used to select our winners, check out our tests for the best stainless-steel skillets, saucepans, and stockpots.. FAQs. Why are stainless-steel cookware sets the best?. Stainless steel is the standard ma