Induction cooktops have been around since the early 1900s, when the first models were patented, with widespread production beginning in the United States in the ‘70s. While the appliance never lost appeal in Europe, Jane Heiling, president of Authorized Builder Sales, reports that here, “there was very little in the way of induction between 1985 and 2005.” Now, though, the induction flame’s been reignited (remagnetized, actually, but more on that later). “Today, it’s the most popular cooktop we sell,” Heiling says.