When a pan is heated to high temperatures—like to make those post-surf huevos rancheros you might be craving right about now—non-stick coatings such as Teflon can break apart into potentially carcinogenic substances that you definitely don’t want in your eggs. How do you know if your pans are non-stick? If the food slides right off the pan without oil, that’s a pretty good bet. Switch over to stainless-steel, iron or copper-coated cookwear—even if it means losing the 12-piece set and opting for a smaller number of new pots and pans.